HTTP 1 will outlive the death of HTTP 3, QUIC, and Google. New standards come and go, old standards exist forever. RSS will probably make a comeback eventually: The ability to automatically process information is a common wheel we reinvent.
It's true, and especially HTTP/1.1 has a whole 25 years worth of browsers which are still usable today!
I think as the nostalgia/retro factor kicks in, it will become cool again to support "Any Browser".
A few common questions about this are:
Security exploits: Yes, you do have to do this on a safe network, but at least over where I am, the Internet is safe enough for me to visit un-malicious websites, perhaps using a VM.
The difficulty of it: It's moderately difficult, but quite doable, with certain constraints combined with progressive enhancement.
(HTTP/1.0 browsers are slightly more difficult to support, because you need a dedicated IP address, as there is no Host: header yet. Netscape 1.x, IE 1.x and 2.x, Mosaic are quite usable if you can get this set up.)
