Given the scale of Stack Overflow, you'd think they could set up AAAA records that point to a proper TLS 1.3+ server and leave the peasants on IPv4 going to one that's more...accommodating.
We could - but the network side isn't the problem. There's a lot of logging, user banning, etc. pieces that need IPv6 love first. We just haven't had the time yet.
There are network bits we'd have to evaluate heavily as well, e.g. firewall rules - basically the very limited benefits don't make it a priority, yet. When things change there, we'll do it.
There are network bits we'd have to evaluate heavily as well, e.g. firewall rules - basically the very limited benefits don't make it a priority, yet. When things change there, we'll do it.