A threat/value-engine like Fable being this prevalent could be a problem, but the metagames seems to have adapted to survive it
With Toph in charge, you can turn your lands into vigilant, unblockable attackersand even bend The Walls of Ba Sing Se , which becomes a land creature with absurd stats
There is a power jump at the third land, so these lands play well where they start coming into play untapped when you really need them to be untapped
However, like self-mill, this can have a psychological effect on newer players, which may be holding it back or be the reason why we so little of it at common
Izzet good
There is also a niche tradition of decks leaning into Pacts weirdness, either by nullifying its lose-the-game trigger, or better yet, foisting it onto their unsuspecting opponents