Your description of the challenges suggest that, whilst you may be sure, objectively it's not the "way to go
for sure".
You could say "Inner tubes are the way to go for sure. The set-up is always super easy, completely assured, takes minutes at home or at the side of the road. It's easy for tyre manufacturers to produce tyres to fit any rim."
I do not seek to denigrate anyone who tries to make tubeless work on road tyres, indeed I applaud their effort and openness to 'new things', especially those who've ridden on 'normal tyres' (and tubs) for years/decades. And thanks to
@mikeymustard (the OP) (and all others) for sharing their experiences.