I say this every time one of these pops up: Just do it yourself. Just get a $5 Linode or a Cloudflare account, make a Hugo/Pelican/whatever site and go. These niche microblogging sites are so small and insignificant that you can never ever trust them to survive (or even persist). Just do it yourself from the very beginning and you'll have a much better time.
The main advantage of self-hosting on a VPS provider is that you fully own your site... but it's a tradeoff in time, money and hassle of setup and administration.
Why bother when you can let someone else do all that for you... for free?