I agree. I use Grammarly for finding outright mistakes (spelling and the like, or a misplaced comma or something), but I don't listen to any of the suggestions for writing.

I feel like when I try writing through Grammarly, it feels mechanical and really homogeneous. It's not "bad" exactly, but it sort of lacks anything interesting about it.

I dunno. I'm hardly some master writer, but I think I'm ok at writing things that interesting to read, and I feel Grammarly takes that away.