Your faith in Disney IT is greater than mine

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I live in CA so really only go to DLR, so am basing this off my experience there with Maxpass. I agree, there is a trade off in that you have to wait 2 hours before using any LLs, but since standby lines are usually shortest at park opening, I don't think that's a significant downside. You're right though that for some people who are planning to use G+ for non-headliners with early return times I could see them being neutral or better off.
The reason I don't think it's intentional is its incredibly non-intuitive, and if you don't read forums/blogs like this, you'll never figure it out. For example, say you book your first LL for 1030-1130am on a day with 9am park opening. It's 10:58am and you're outside the ride. If you tap in, you've missed an opportunity to stack, which I believe literally means for the rest of the day you'll be able to get half as many G+ reservations as if you'd waited until 11am, booked a g+, then tapped in and booked another G+. There is zero literature explaining that you're better off waiting, and it goes against a core principal of Fastpass (you can't book 2 at a time).
There have always been advantages to those who have experience with Fastpass (refresh system, booking your 3 FP+ early in the day so you can get to the 4th FP earlier), but the above is an example of what should be a very simple choice (tap first then book, or book, tap, book) that if you pick wrong makes a huge difference for your day, and there's no way for a random guest to know that the book, tap, book, strategy is much better. That can't be something that Disney intentionally decided is a good idea, though they very well may not ever decide to fix it.