Trump is interested in votes and money. Bitcoin can bring both because it's not hard to be pro-crypto following pretty harsh measures of the Biden administration, and since Bitcoin is money, you can (and that's what he's doing) fundraise more for your presidential campaign from Bitcoin enthusiasts.
I don't support Trump as a politician, his views are far from my own. But, more importantly, I truly don't believe that Trump is sincere with his pro-Bitcoin stance, considering that he was consistently anti-Bitcoin for all those years before, and it's a very convenient time to change your policy.
Do you really think he changed for votes? I personally don't think so because people change their views as they learn more about the subject. Trump launched his own NFT a couple of years ago despite being anti-crypto years back. He wouldn't launch the Trump NFT if he still disliked crypto.
We should not be too stubborn when using other people's past to judge them in the present because things can change over time. It is normal for Mr. Trump to change his stance on bitcoin and cryptocurrency, as many of us also hate bitcoin and have changed our opinion on it. But personally I don't think he likes bitcoin as much as he shows, it's all about votes and not that he really wants to promote bitcoin like what he says. But his support for cryptocurrency will be better than what the current administration is doing, the Biden administration is hindering the growth of bitcoin.