V5 seems more like an app that wants to push you to buy some subscription.
I think that the result is that you should not use your own dns, but the so super great and x times better from the app developers. The whole thing of course for money.
Dear developers: leave the shit. Put on donations, but stop to make something good always broken by subscriptions.
I see no advantage in using a certain dns. Rather a disadvantage - especially concerning the use of my surf habits, which theoretically can be tracked wonderfully. It’s enough if Google and Co already do this…
Always let the user decide - and don’t dictate something just because 10 people think it’s great.
and you forget what speed really means. DNS have only a very small part in making something faster.