Leaving aside whether this is a bikeshed or not, I'm not at all surprised that a community that passed through the 2->3 project would subsequently be concerned about even the barest repeat of that.
It is to the point that a sizable amount of my value is derived from being having been around long enough with my ear to the ground to be able to recount the logic behind arguments from each side and giving recommendations on how to broach remaining tensions.
In any case, I don't think that in the Python ecosystem there will ever be another jump of the same magnitude as 2 to 3.