Not everybody has hands of iron.

I've never broken a rim with a metal jack. If it comes down to being stranded at 2 am in the rain in the middle of nowhere and a 0.001% chance of damaging a lousy $400 rim?

Get tubeless tires, use Silica (sic) ultimate sealant, dynaplugs, and it is highly unlikely you will need to take the tire off the rim. If you do, better have a real boot (and a tube) and not the Parke POS boot.