@pixouls From the comments, re. old devices not supporting modern HTTPS:
> I think the solution is to reinstate HTTP as a first-class Web technology for informational sites.

I'm not sure what to think about this. HTTP is vulnerable to a MITM modifying the content of my site, including injecting ads or other malware. My TLD (.dev) is on the global HSTS preload list so modern devices won't use it over HTTP anyway, so maybe I should support plain HTTP?