Here in northern europe we have a lot of non neautral situation but few non neutral devices are sold…at least in the smart space

So many are using leds which are way below the requirement min load for non-neutral dimmers. As soon as you need bypass and have to deal with the flicker/flimmer consequences which non-neutral devices are more sucepteble of.

Most installers install neutral, either pulling new wire or installing the devices in the roof socket and using wireless buttons instead.

But most light dimmer installations are done as part of renovation so pulling a new cable is done in most cases anyway.