FWIW I don't block non-HTTP2, but at some point that 4.8% who can't use it will be much smaller and if you are still turning it off you will be part of an incre

FWIW I don't block non-HTTP2, but at some point that 4.8% who can't use it will be much smaller and if you are still turning it off you will be part of an increasingly insignificant population. It is not dissimilar to measures that will have the side effect of stopping apps working on IE - I wouldn't in DayJob¹ but I'd not think twice on a personal project. I don't have time to care that much about people with very non-standard or very out-of-date setups, if accidentally blocking them is a side effect of a benefit I might feel. Added benefit: blocking them effectively removes potentially difficult users from the support queue! And to some, that 4.8%+4.8%+… doesn't overlap their target audience enough that losing the few in both categories isn't really a problem in the grand scheme of things. ---- [1] some of our clients still have users using IE11 even though we no longer officially support it² so we still don't want anything other than minor display & performance issues there ATM [2] of course we will for more money, if someone wants to pay us to address said minor display & performance issues