Here's what I've seen from people who are playing this game on videos and stream and are having fun: they're generally slower players who weren't capable - even with the previous control set - of maximizing speed and efficiency in a game with lots of small tasks and tons of busy work. Quick and efficient players, on the other hand, have a hard time with the new controls because everything now frustratingly takes much longer.
With the old controls, if there were a lot of interactions to perform in a small area, those controls allowed fast and efficient task completion. The new controls no longer allow this and now force individual interactions with each object to take significantly longer, significantly increasing time spent on what would have otherwise been a relatively quick job for the quick player.
This appears to be why some players report no issues - these are the "slow" players for whom the controls do not present a bottleneck.
The other issue is that some actions are unbindable - if an action bound to a hold doesn't make intuitive sense to the player, there's nothing they can do about it other than set a toggle which swaps the same two actions bound to a single key, to another key, which is not a solution.
The strength of the previous controls was their quickness and their customizability.
The new controls don't allow either of these things.
It's why I've been hard filtered by 0.9.0 - my life is too busy for frustrating, time-wasting controls to stand between me and enjoying myself.