Nah, regardless of what you think of Che's character it's totally clear, and has been said in the show plenty that they use they pronouns. I wouldn't say it's bollocks, to me it's no different than making the effort to pronounce a name correctly or something and I'm certainly not up to date in all the correct terms. Has the LGBTQIA+ stuff been really done on AJLT to the point of being overdone? I think so. But to just flat out call a characters identity bollocks is a bit ignorant imo, whether you like the character or not is irrelevant but dissing their identity is.