Everyone's brain builds a model of the world.

One of those higher levels of maturity that some people never reach is to realize that when your model becomes incorrect, that doesn't necessarily mean the world is broken, or that somebody is out to get you, or perhaps most generally, that it is the world's responsibility to get back in line with your internal model. It isn't.

This is just people complaining about the world not conforming to their internal model. It may sound like they have a reason, but the given reason is clearly a post hoc rationalization for what is basically just that their world model doesn't fit. You can learn to recognize these after a while. People are terrible at explaining to each other or even themselves why they feel the way they feel.

The solution is to be sympathetic, to consider their input for whether or not there is some deeper principle or insight to be found... but also to just wait a month or three to see if the objection just dissolves without a trace because their world models have had time to update and now they would be every bit as upset, if not more so, if you returned to the old slow loading time. Because now, not only would that violate their updated world models, but also it would be a huge waste of their time!

Thoughtful people should learn what a world model violation "feels like" internally so they can short-circuit the automatic rationalization circuits that seem to come stock on the homo sapiens floor model and run such feelings through conscious analysis (System 2, as it is sometimes called, though I really hate this nomenclature) rather than the default handling (System 1).