Right, we need mass Bolt 12 adoption, but that won't happen for a long while. Using a web server introduces the same issues that Bolt 11 LN Addresses have though. We had centralization and the ability for custodians to run you.
Discussion
I'm not sure I fully understand the point you are making.
For the vast majority of phoenix users who use DNS addresses, the domain is controlled by acinq. Isn't Acinq a custodian in this scenario? Not so much different than lightning addresses generated by wallet of Satoshi.
Technical users could use their domain instead for bolt12 but could be argued that they also can run their own web servers for lightning addresses?
That's the difference here. With WoS, you are using their domain and you can't change it.
But only technical users can do this right ? That's the point. If the discussion is around what technical users can do, then they can also use a custom lightning address. (Would have to run it themselves).
Non technical users don't run domains so Acinq is the custodian in this case.