Substack Is a Trap
twitter.com
twitter.com
The only way to own your content is to, well... own your content
Host/publish it yourself
Or expect everyone else to profit from it
Hosting your own means server costs and a lot more. Substack is taking care of that.
It seems to me that those who want to use twitter (etc) as a platform to complain ought to be considerate enough to talk about the options.