Tbf, this doesn’t actually go against them being FB as FBs are activated by external reiatsu, the example given by Ginjo being Hollows attacking pregnant mothers.
Still actually doesn’t contradict anything as its awakening their powers. You could say it goes against the point above but Ichigo so innately powerful that he just activated the Hogyoku passively which gave them FB
This is more so just a way for them to activate the SK shard inside them
That’s just expanding on what FB is. Plus Chad being the SK’s genitalia makes perfect sense
Clearly he said it’s FB so he made up his mind.