Yes, it is possible, as per your linked resource, however it would be up to the server maintainers if they feel it is reasonable to do. Note that federation is not supported over Tor, so federation would go over the clearnet via the original instance. This is not an issue, because the only thing that would be useful for Tor is hiding the client connection IP address, which would be handled under this configuration.
I use Mullvad Browser. It’s maintained in coordination with the Tor Project, and is essentially the Tor Browser with Tor itself stripped out. Same browser fingerprinting protections, however, among other things.
If you’re in the US, here’s a big list of resources that could help you figure out where you want to go! There are multiple provider finders for gender-affirming care, therapy, financial assistance, and all sorts of stuff. I do recommend seeing a therapist (like a LICSW)! Not only is therapy wonderfully helpful in finding out who you are, but if you’re looking for some types of care further down the line, insurance may require a letter from a qualified professional (sometimes even 2 different ones depending on what you want; I have a therapist and a psychiatrist so I go to them). Getting things documented and tracked would be to your benefit if you ever need a letter.
I wish you luck on your journey!
EDIT: Gender Justice League is based in Washington State, so there will be many resources specific to Washington, but there are also national resources listed that you can search through!
This was already posted here, and the original post has a paywall bypass link
I can’t help with pirating software, your options are going to be heavily limited because most people running Linux would just prefer open source alternatives (like Blender), so it’s far less likely you will find cracked software specifically made for Linux (plus, there is a far smaller userbase). On some quick searching, I did find someone who had issues running Houdini in a VM (for multiple distros), but it worked fine when it was installed natively. I’m not seeing an entry in the WINE database for Houdini, so while you could always try running a Windows version through WINE, given the type of program it is, I highly doubt it would run without issue. I have no recommendations on how to get ahold of a Linux compatible version without a license.
Well, you could use the wrong finger. After 3 attempts, my GrapheneOS install brings up the password field, but you can go back to the lock screen and try 2 more times until it locks out of fingerprint unlock (so 5 times total). You could always hold the power button down while it’s in your pocket or bag, pretending you are searching for the phone or something, and then lock it down as soon as you lift the screen up.