Okay Dokey…
You’re getting pinch flats because you are not running enough pressure to ensure your tyre sidewall doesn’t fold and pinch the tube on square edge hits.
Your valves are ripping off because the tyre is rotating on the rim under braking.
upping the pressure will fix both issues!
have tried loading the tyre with talc to stop the tube being pulled round, but to no avail.
there’s no need for talc if you stop the tyre rotating. 😉
make sure you seat your tyres on the rim properly by over-inflating them when fitting, a properly seated tyre often feels almost as if there is adhesive on the bead when you remove it from the rim.
Tubeless will not help stop sidewall rips, infact quite the opposite.
and if you are happy running pressures where your valves get ripped off I envisage problems with burping air from the bead with a tubeless set-up.
for me tubeless tyres burp air at higher pressures than I’d pinch flat a tube at.