I don't capitalise on my sex/gender; I just prefer the use of neutral language when talking about anyone of unknown gender. In any case; I signed up for this when deciding to put my ideas online, and it has given me a chance to connect with a lot of nice people, despite also having to take the negative audiences along with it. I definitely am surprised that my blog attracts as much positive attention as it does; I never really wrote with the assumption that I'd have far reach. But, it's nice that others out there do care about some of the things I do.
Currently Discord doesn't require a number if you use your home IP to connect, but that could change at a moment's notice with their opaque methods of operation. I've used Tor with Discord for months without any issue until recently. So, it's probably better not to start using it now than to take that risk and be upset when they do find a reason to demand your personal information.