Everything you said is correct. We've described two ways to apply these rotations, one of which will gimbal lock. And Quaternions of course have several advant

Everything you said is correct. We've described two ways to apply these rotations, one of which will gimbal lock. And Quaternions of course have several advantages and you should use them for those reasons. The goal of the article was simply to explain that avoiding gimbal lock isn't the main reason you should consider Quaternions, which most people commenting here seem to have already been aware of.