Frankly, the whole thing is daft. It's no more than a bureaucratic botch up to make life more complicated and expensive than it need be. The old brown ICAO PPL made no such artificial distinctions. You were licensed to fly a single engine aircraft up to 5700kg, and that was it. True, there was something identified as a SLMG but in truth no one seemed to have any clear idea of what that was.
I'll accept that weight shift and paragliding/paramotoring is a different ball game but that's about it. All this EASA complication and ring fencing is just job creation and obstruction...IMO.