I listened to that podcast with Justine on, she more or less said that the vlogger girls read Tattle on the regular and have tried to help her get an account/sign in. Makes sense how they randomly get 'sent screenshots' all the time!
Also was browsing this account, opened this post and - that must be Dali right? Mackey Ireland saddle pad and he has that constant tail swish.
Seems this person doesn't seem to care (rightly) what influencers think, a couple have replied in their comment section defending themselves for using some type of training method (not that they were in the post, like Dali is) that was being criticised and they very much stand their ground.
edit: I just scrolled down to see Holly commented on the post haha. They seemed to have a nice-ish talk about it, Holly wasn't happy about the clip being used without asking - which I'm 50/50 on, she posted those clips publically and they were taken at a public place/show.