Actually yes. But California allows some stupid felonies. Petty theft with priors can be charged as a felony, so, third strike can be shoplifting a candybar, since a third strike for stealing anything can be a felony at the prosecutor's discretion. So, it has to be three felonies, but the third doesn't have to be violent, and "prior conviction" upgrades make a lot of petty third strikes "felonies" in CA that would not be such elsewhere.