[kelnos]

I think you're conflating two things. You can absolutely have your own website, and still use Substack. Then if you do have to move off Substack, you aren't "moving" in the sense that your URLs remain the same.

Getting a list of your existing subscribers' emails from Substack in order to migrate notifications to your new platform (hosted behind the same domain name you own) is of course an important part of moving, though.

The argument from the article is that you should be hosting your writing on blog.mywebsite.com, not mywebsite.substack.com, even if those two pages are identical and are both hosted by Substack. That's the entire point it's trying to make.

Whether or not your readers visit your website or consume your content entirely through email notifications isn't relevant to the point the author was trying to make. Because despite your absolutist "no one", some people will visit your website, and having a stable location that you control yourself is important. (Also please consider that while you may have been publishing on the internet for decades, your experience may not be universal.)

It is absolutely crazy to me that anyone with a serious web presence doesn't have their own domain name, even if that website is backed by someone else's hosted platform.