From the few cases you've seen, do you have an idea of what could be done to fix it? Does their suggestion seem appropriate? Obviously you're not a dental professional and I don't mean to imply that

I just mean, is it their solely their attitude that has bothered you, or is it the intervention they're suggesting too?
I've seen some similar cases online of an open bite being caused by a nightguard/retainer that has been resolved with orthodontic treatment, braces or invisalign. Since the rest of my teeth are already aligned from my previous stint with braces, they proposed putting attachments on solely the wisdom teeth to align them correctly (since they are making premature contact, as they said in the initial consult), which they said would take about 4 months to complete and of course cheaper than a full course of regular orthodontic treatment.
I would be pleased with that, it's more they're attitude that has bothered me - I feel like there's somehow been a lack of continuity between the initial consult and now where they're suddenly kind of sounding more reluctant to do anything about it. I honestly wonder if I've made the mistake of coming across as overly anxious to the extent that they're worried about me turning into some kind of problem patient lol. The way the ortho came across in this most recent appointment was definitely much more straying towards the overly anxious/hyperaware kind of rhetoric. I've got a further appointment 6 months down the line but in the meantime if things don't budge with this new retainer then I may seek out some second opinions!
Did they mention why they're not considering removing the wisdom teeth?
They proposed that as one option - it's definitely something I'd think about. In honestly I'd veer more towards the orthodontic treatment over that first, as I feel like a 4-month timespan with orthodontic attachments on only the affected wisdom teeth isn't too much of a drag for me personally.
I think I'm more just puzzled over them initially presenting me with treatment options and then in this most recent visit, seeming to backtrack, and talking a lot more about the 'perception' of the bite. I think I perhaps came across as overly anxious and neurotic and they felt that maybe I'd just become one of those 'problem patients' who's never going to be satisfied lol.

I think I'll see how I get on with this new retainer they have made me, even though they said it would really just prevent any worsening and then maybe try and seek out some second opinions elsewhere. From what I have read, it seems like dental/ortho work in particular seems to be one of those areas where you could seek out a handful of qualified opinions and receive totally different treatment plans/approaches that will nevertheless get you to the same outcome.
I had a similar issue to you, I always had straight teeth until my wisdom teeth came through and ruined literally everything. I had the bottom 2 removed and then a few years later, my top ones came through and totally over erupted, so I had them removed as well, and as a result my teeth shifted due to there being a load more space in my mouth and I ended up with a totally fucked up bite, I couldn’t eat and had awful TMJ pain.
I’d say get a second opinion if you want to be sure, but considering what getting my wisdom teeth removed did to my bite, I can understand why they might be hesitant about removing them, especially if they’re not impacted / causing you infections.
Oh no, that sounds awful. So sorry to hear this. Are you still struggling with your bite nowadays or were you able to get it resolved? Honestly, teeth/bite issues are a menace. I'm honestly a little bit wary about getting mine removed as I already had 4 extractions as a teenager prior to braces so my wisdom teeth have come through with space and are not impacted - but have nevertheless become hyper-erupted due to my retainer not covering them all. So I feel like opting for the orthodontic option of having braces/attachments placed on those teeth to align them back (what they proposed as one option) would be more appealing to me, especially since my wisdom teeth are essentially healthy teeth and I'd rather not 'lose' them.
I think it just feels a lot more like they are trying to pin a lot of it on anxiety/'perception' now even though they identified an objective issue during the first consult, which confuses me. They even asked me whether I'd had a lot of stress or other things going on in my life when this developed. Sort of an understandable question ofc but also felt a bit invalidating. As it stands, this issue isn't ruining my life but it's also definitely an annoyance and not something I am content to just live with indefinitely, especially longer-term. I will maybe seek out a 2nd opinion!