Something like a HTTP 1.1 client is something you might expect would be a pretty stable thing that doesn't need too many updates, right?

But I would not assume that a HTTP client that has been untouched in 12 years supports SNI, for example, which means that actually it might be totally useless for a lot of modern sites (certainly Android did not support SNI 12 years ago).

You're going to put it behind nginx anyways, right? So why does it even matter?