I think it's a response really to that argument that BL is practically shojou but fetishized coz the bottom's always so feminine (without realizing that there are actually men and actual gays irl who are like that lol). The hype's basically for uke that looks and acts like seme, and though I do enjoy a lot of works with this thing, on another hand, it can get icky when the bottom's design is similar to those exagerrated FLs in hentai with airbags for boobs, another thing is when they are written to act like the toxic semes in typical BLs (distant, short tempered, violent, etc.)- the character's still unlikeable for me, doesn't matter if he's taking it up the ass now.
lol when I first read bl, they were mad when the uke was buff, but now it's the other way around ahhahahaa