On my 30 years on the internet, I noticed I rarely return to explain problems I solve if I have to make an account.
If I’m logged into GitHub or SO, no problem. Answer or code away.
But typically it’s on random forum or some blog I never heard of, and to create an account… Bleh.
I was like this because I didn’t want to use my email address. It inevitably just means more spam.
But check this out: https://port87.com
You can give out an address just for them, then block it when they spam you (or just for fun).
(Full disclosure: I wrote this service and run it.)