Nobody sells motherboards pre-equipped with a mutant H100, D14 with no pump or radiator. That would be preposterously stupid. I don't see the difference.
At a time when people were unsure of how GPU warranties would be affected by blocks it makes sense, but now GPU manufacturer's openly don't care I really can't understand it's place. Mounting a GPU block is easier than building and bleeding a loop. It makes sense at a price, but it's almost certain that it will cost more than that.
JR