In a few weeks, 1% of creators already using YouTube Studio will no longer see the ‘back to Classic’ button – you’ll be notified 1st & can still access Classic features you need! This won’t apply to everyone else until early next year. More info → https://yt.be/help/a7mG
I don't mind it, but please understand the classic is still much easier to use when it comes to monetization. You added functionality to the Cards and End Screen but I can't seem to locate where I am able to place my ads. Its much harder to use Studio in certain ways.