Especially given the number of things platforms like YouTube, Reddit and Medium are cracking down on/demonetising. For instance, your own host likely won't boot

Especially given the number of things platforms like YouTube, Reddit and Medium are cracking down on/demonetising. For instance, your own host likely won't boot you off or interfere if you post cybersecurity related videos/articles, like YouTube started to do a few days ago. Having your own site provides a backup in case the platforms you use to promote your work turn on/your industry. And don't worry about the extra traffic a platform may bring. That's why you publish on your own site first, then syndicate your content to other services later. https://indieweb.org/POSSE https://indieweb.org/POSSE