I feel like at it's core it is. This conversation wouldn't even be a thing if tifa had smaller chest. Women are allowed to have large chest without gazes start telling them what is or isn't appropriate to wear and to look like.What I wonder is, since the whole Honey Bee Inn sidequest is confirmed, we'll see Tifa and Aerith dressed up. Whatcha wanna bet, these same guys will be gloating that SE listened to their complaints once they see Tifa in a dress.
I think you're taking it more serious than need be. I believe by boner culture she's referring to an infamous tweet made recently where some guy upset over the new Mortal Kombat designs that he wanted sexy default designs "for the sake of boner culture".
???
I don't think that's happening here.