Your opinion on pansexuality & omnisexuality

I identify as panromantic and did as pansexual for years before, and it just PISSES ME OFF to see creators just going "oh you just don't want to admit you're bi!", "are you saying bis can't love NB and trans people? transphobe!", "you're at fault for bi erasure!". Why do you want to police how I feel and force me into a box I don't feel comfortable in so bad???

Does it matter so much if a group of LGBTQ+ people decided they didn't feel comfortable with your label and made another??? Anyways, I wanted to have other opinions on that.