"Doesn't make sense for us but mandated by policy" is a super common phenomenon that you'll sadly encounter all the time in the industry. Especially when it comes to security. In this case it's at least motivated by something as peripheral as onion services wanting to fit in with the browser ecosystem, which, fair, maybe it doesn't make sense for browsers to bloat their designs by taking onion services into account, and then onion services have to adapt to modern browser standards.

>"Doesn't make sense for us but mandated by policy"

It's way worse in the physical world than in the software world IMO.