I’ve heard the 291 to 100 rumor too, no idea where it originated or if it has any merit.
Granted there was a lot of filler in DBZ, but it won’t really be apparent until they get to Namek. There was still quite a bit during the Saiyan saga, but it never became obvious until they went planet hopping.
10-20 is way too little, there’s more filler episodes than that, and presumably those will all be cut entirely. So I wouldn’t even expect the Garlic Jr. arc, for instance.
