Personally I don’t use either platforms although I used to be a bit addicted to Twitter until Musk destroyed it imho.
There are only two online content monetization models - ads/indirect or direct and both have pluses and minuses.
The news about Substack giving Nazis a platform shows us that direct monetization is not the answer, maybe until a really simple low cost micropropayment platform emerges, so we can pay for articles we like. Until somebody manages to offer privacy friendly personalization, the ads/indirect model will not be the answer.
What do you think?