I'd argue that's happening right now. But we don't know if it's still running on a phone as the post is from September 2024. *Edit, Blog author confirmed it's still running on the phone.
Self hoster here with a vaguely similar setup at home. Absolutely not needed, that just defeats the purpose of self hosting and being in control. Might as well rent space in a datacentre if you're going to proxy via there anyway
One unexpected benefit of hosting your blog on a phone: an excellent defense the next time Comcast sends a nasty letter admonishing you for connecting a "server" to your residential internet.
Well, it's a violation of the ToS. Presumably they want to upsell you on the business plan.
Of course in practice, unless you're running a seed box or something, they're unlikely to find out/object. I've never heard of anyone getting dropped just for having a server on their home network, but I have heard of people being dropped for excessive upload.
