We never said that. But we do prefer fine stages over not fine stages, and your reason for banning those 2 is water, which is non-intrusive and elfino has more of, and walkoffs, which are no longer a problem due to time limit and which Delfino has more of. Skyloft may have caves of life, but they are temporary. Wuhu may have more walkoffs, but they are temporary and the cooldowns between them and many, and long too. None of them are uncompetetive anyways, and the 2 of them were neutral until Apex happened and ruined Smash 4 in multiple ways.
None of them need to go because we'll still have more static stages. We, or at least I don't prefer transformers over everything, I'll be wiling to defend statics like Gamer, Norfair and Kalos as counterpicks, and I'm willing to let Pilotwings go and orbital Gate(Even though it's fine, it's too threatening for anyone to accept) > If we really preferred transformers, chances are Orbital Gate(which should) and Pilotwings(which should never come close), as well as Wooly World(nothing wrong apart from 50% walk off all at once unlike tother transformers and the transition from walkoff killing half the cast). They are not there, and we still have many static stages, so msot TOs are not transformer biased.
If two really have to go, Delfino should be first according to you. It has more of your 2 main problems, right?