This has a serious case of in-housing the edge cases that I don’t think many would want to pay the price for.
The problem with DNS per the haiku isn’t that it’s difficult to understand, or even that running your own DNS server is particularly difficult. It’s that coordinating information and exchange at scale is a tricky problem with a lot of non-obvious edge cases and foot guns.
So trying to reduce complexity by sidestepping DNS really doesn’t do that, it just leaves you holding the bag on all the problems that DNS was quietly solving for you in the background.