Do you even use CSS floats these days 🤔

Almost always the answer for me is no. However, there is a rare time where a client really wants that text to wrap around an image and a float is probably the best way to go.

I’d never use them for anything else now that we have flexbox and grid

Nope. It's been a while since I used it the last time. But I am sure that there is still an use case for it.

I think it's used mostly in text editors (WYSIWYG) to arrange imaages inside block of text. In other parts flex and grid is the way to go