Is dealing with GQL easier than implementing a BFF? There may be cases where that is true, but it is not always true.

I think BFF works at a small scale, but that's true with any framework. Building a one off handful of endpoints will always be less work than putting a framework in place and building against it.

GQL has a pretty substantial up front cost, undeniably. But you hopefully balance that with the benefit you'd get from it.