Really appreciate this especially the EDNS Client Subnet point, that's a gap worth addressing directly since it's exactly the kind of thing that silently breaks geo-targeting even when everything else in the proxy chain looks correct on paper. The DoH-bypasses-proxy-DNS issue is a great catch too - that's a real blind spot for antidetect setups specifically. A profile can look fully proxied at the network layer while DNS resolution quietly leaks straight through DoH, outside that path entirely. On the A-only/skip-AAAA workaround - agreed it's a fair pragmatic fix for most proxy-routed setups today, worth adding as a concrete option even though it trades off some future-proofing as IPv6 adoption keeps climbing. Good push on the resolver-share number too will go back and check the source on that and get it corrected if it's undercounting. Appreciate you actually digging into the numbers instead of skimming past them. Might turn the ECS + DoH points into a proper follow-up piece on their own, honestly — they're meaty enough to deserve more than a paragraph each here. Thanks for the genuinely useful read.
