Yes, but that shifts the trust even moreso onto Apple, and now they know every site you visit AND can see all your unencrypted traffic from their servers, and can associate that traffic across multiple devices/accounts/IPs with it.

Collusion between the relay and gateway is exactly the situation they warn breaks the privacy features of OHTTP.

And while some might think "well Apple controls the whole OS, they can always spy on you"... yes, but I'm operating under the assumption that they're not currently doing this, and that collecting data at the relay level may be easier/more desirable/discrete for them.