I would agree with you if that were true, but the lack of diversity outside of hyper-aggro and combo-decks means that most old archetypes are not viable in Wild for climbing the Ladder. Many players who have the mindset that Wild is fine as it is, just do not want their “pet deck” to be nerfed, because they realize if the devs start balancing a lot of Wild cards, it’s going to impact their favorite broken deck.
There is no doubt that a lot of players want Wild to get a balance treatment or there would be no need to have a “Wild Summit” to discuss the issue. Some Wild players have been strongly demanding balance for Wild for quite some time: