As someone who regularly buys music on Bandcamp, I can't say that I've noticed any substantial changes throughout the acquisitions.

It also seems that most bands that I listen to prefer people to buy their music on Bandcamp before other platforms, so presumably it's still a better deal for the artists as well?

I believe so yes, they make their payout % clear and are continuing to do days where they waive their cut entirely.

You’re one sale behind the times, Bandcamp was sold to Songtradr in 2023