tubeless sidewalls are normally a bit thicker, hence less susceptible but (as well as to stop slow leaks) they do that because a slashed sidewall is a bit harder to sort when tubeless than tubed
They do that to give extra support as the tyre doesnt have a tube to help. A tubeless is only harder to sort as you have to remove the tubeless valve…hardly troublesome!
People always seem to talk about tubeless tyres getting slashed, never tubed…think this is people seem to think that running tubeless means they can run uber low psi…hmm, for me the benefit is rolling resistance with same psi (i like my rims!) and better feel.
Been running normal maxxis kevlar single ply for just under a year now with no slashing issues (although weekend gone i did pull the rear tyre compleatly off the rim at ~30psi…just got me a 2bliss for the tighter bead).