For what it's worth, I have a markdown-based website with a domain I own, and I stubbornly link to that website only, treating substack as just a temporary distribution channel.[^1] And I am constantly, endlessly asking myself if all the extra friction I've added to my life is worth it.

[^1]: I can't stand how slow and tracking-heavy substack is, but the problem of "send email and not get filtered as spam" is non-trivial.