I don’t follow many of the advises in “How to run a stress-free EndeavourOS” and none of my devices ever broke. But keeping your local device in sync with the distro configuration is probably desirable, even if a derivation is still supposed to work. And we have evidence of breakage.
Imho there isn’t any valid argument for letting your local installation unintentionally drifting away from what the distro provides. We just don’t keep them in sync because a) we aren’t aware of it or b) we don’t know how to do it or c) it’s inconvenient. All of those reasons are understandable and we can argue about the impact, but not that it shouldn’t be done.