A bit off topic but leading on from what
@ishant said yesterday about But Daddy I love Him closing the Eras tour, I really do think/hope that Taylor might do this.
Looking back at Taylor's past set closers, they're all a very punchy tracks that have a pretty clear symbolic meaning in one way or another (Picture to Burn, Should've Said No, Long Live, WANEGBT, TIWWCHNT, and then Karma currently for the Eras Tour). Karma definitely fits the brief; like TIWWCHNT, it's very much Taylor sticking her middle finger up at anyone who has wronged her through saying that, at the end of the day, she's the one who can come out - quite literally - singing and dancing from the experience.
I feel like But Daddy I Love Him has a deeper meaning than just her self-awareness toward who Matty is (that said, I'm not doubting that this isn't what the lyrics mean in a outward context). I very much see this song as being a clap back to the media and the way that they portray Taylor in general, not exclusively in the context of her relationships. Even the whole "I'm having his baby" joke, to me, reads into the tabloid headlines dating back to 2015/2016 that Taylor was pregnant simply because she gained some weight or wore a certain outfit or wrote an allusive lyric in one of her songs. Her reaction, and wish to "see your faces", refers to the gullibility of the tabloids for soaking up any 'gossip' or 'drama' like a sponge and posting about it, much in the same way that her fans do afterwards. Taking this perspective means that the song isn't _as_ scathing toward her fans, which might make it more appropriate to include at the concert which said fans have paid a substantial amount of money to attend.
To be fair, the rest of the lyrics don't completely match this theory, but I feel like the "most judgemental creeps" are the media just as much as the parasocial fans; they're the ones who will spurt out anything and everything about Taylor because they know that it will give them public engagement; they slut-shame her endlessly; they give her either the most positive or scathing opinions about her music and public appearances (the Sun posted last Saturday - after TTDP release - that Taylor is "no Madonna" and is not an "iconic popstar", only to then give TTPD a 5* review 3 days later). Yes, her fans are pretty similar - and in terms of her Matty relationship they are probably more judgemental than some of the media articles - but it's her media portrayal that really impacts the way that society perceives her at the end of the day. Similarly, "and no you can't come to the wedding" could also read as as a tounge-in-cheek reaction to the marriage rumours from the tabloids between her and Joe in 2020, and later the engagement rumours that they're already pouring out between her and Travis.
Much like her other set closers, BDILH can definitely be taken out of the context of her Matty relationship and is pretty applicable to any public figure's personal life. Taylor's saying very bluntly that's she's happy in her relationship (I also think that this song is Travis coded; the public told her that she was rushing into her relationship but she won't listen to their "white noise" and won't break up, nor due to the backlash from his childish tantrums) and that nobody's opinion is going to change that. I feel like that's a pretty strong message to end her tour with - maybe the best way to get through to the fans and media who believe that they're entitled to a say in her personal life.
Sorry that was a lot longer than I anticipated when I started writing this