Would have thought that if you did not have memory issues on 22.5.0 using a ton of HATS bloat then with the same setup on 23.0.0 you'd actually gain more memory (+9mb~)
For me I now have around 17mb free (was previously 8mb free)
turns out the sysmodules just used sfdnsres ipc commands not implemented into atmosphere (that were new in 23.0.0), and that some others used the old ones, dns.mitm worked for the ones who used the old ones, and not the new ones.
atmosphere...
I've now manually added 90dns to my internet config just to stop any Nintendo pings at all... perhaps as expected the 'Test Connection' function now fails, which suggests the hosts file is indeed non-functional for sysmodules? Regardless of DNS...
I've always have Exosphere blanking on so it's possible that, as I understand, their servers refuse the connection without a valid handshake? Currently not banned though as tested it on OFW just now and eShop works. I guess it remains to be seen...
When you say "my fork" do you mean Atmosphere being forked, or just the current one? Forgive my ignorance here!
I am unsure how some people's Switch seems to be downloading eShop updates for games though... mine does not connect to anything even...