HN user
If there is misinformation on Wikipedia it can be corrected. Unless you are claiming that all hits for "misinformation doctor" are incorrect, a few examples to verify and correct would be helpful.
Marimo is much better for git than Jupyter. I only wish it had a gittable/reviewable version with output, too.
Regarding Spam I’m happy with my Hoster mailbox.org - a bit aggressive on filtering (sometimes Newsletters that I don’t open often appear in Spam) but I never had my mails appear in Spam by others. I’m not a big fan of the Web UI though.
I heard good things about proton.me but haven’t tried it yet myself.