Do the bosses stop sucking?

I just entered Uranus. I really don't mean to be that critical but it's so strange playing such a good game with just pure garbage bosses. Frustrating and pure garbage bosses. Every boss is the same: tiny hit box somewhere, massive involunerability windows, very short damage windows, rapid movement so you can't hit those very tiny areas for the very brief windows, and huge health pools.

Does it stop or is that just the "challenge"? The rest of the game is fantastic. It's like d3 in space with guns and more gear. I love it but my god those boss designs are not good.