I accept ust rims and tyres are heavier due to their double sidewall and most I’m reading was exactly my opinion until my newest bike came with stock ust I was blown away. I’ve lost very little pressure (don’t want to say none as some science buff will probably shoot me down)
I also carry an innertube in case of a puncture as don’t want to be messing about with that nonsense on the streets of Nottingham.
Yes ust are heavier but require no sealant
Tubeless are lighter but DO require sealant which is both messy and costly (and builds up in the tyre negating the extra weight loss) – I’m trying to be biased but ant help myself – sorry
Tubes are familiar, friendly and easy
Er …. Guess the debate goes on