I'm not going to get upset at anyone using however many letters to describe an inclusive, group, all of them in the alphabet if they wish. Though if I were in her place I personally would just say MMIWG+, where + is other humans.

Like I think it's bigotry when insisting on removing letters as a policy clearly motivated on exclusion, but in normal conversation, using GBLT+, 2S+, LGBTQ+ etc. for brevity when you are referring to all forms of gender expression, I also won't get upset.

*Upon some more thought, why not just focus on the plus as the banner? Gender expression is a spectrum and unique to each of us. Gender+ (which would be inclusive of agender ppl btw) and Sexuality+ or Romance+ sound pretty cool to my ears, so we can talk about it like an upgrade to people's life and freedom, not needing to conform to cis, binary and heterosexualism, and then we don't have to fit people into one of a myriad of categories we force ourselves to create?