

I would say a vpn and that app and a throwaway email address are all you would really need. Proton might have some free servers for vpn im not sure. You’ll never be sure but it’s a relatively inconsequential item so just do your “best” and then stop stressing. A throwaway email and a vpn and using a specific browsers (with Ublock) only for twitch would accomplish similar.
Get Bitwarden and keep all your passwords unique and safe with a very strong password or phrase as your master that is never reused anywhere. That will give you more security than worrying about every site you click on because having an account breached will generally impact your life negatively. Getting a personalized ad here or there is way less problematic on the grand scale of things.
You can set a cookie with any of the tamper monkey type plugins and the “ban” goes away. Not sure if they ban in another manner for account creation, but you can browse not logged in, etc.