I doubt it’s as big as you say. Watch interviews with normal Trump voters (ie, not the meme-lords and q nuts), and they have expressed a pretty high degree of frustration with his Twitter habit for most of his presidency. Given how long Twitter has put up with the obvious abuse of the latitude they uniquely gave him, a lot of people may be grumpy but will understand. Had they done this years ago and NOT given him such exceptional latitude, then you’d probably have seen much larger blowback.