"Immune to rejection" and "consider all criticism" are both useful but much, much harder than doing one or the other reliably. Lots of assholes are immune to rejection and a lot of doormats consider all criticism. Doing both means you keep your ears open but are resolute (and maybe delusional) about a few core ideals. And maybe even those change with criticism.

There is a reason you see lots of asshole business owners and not many doormats, though - you need to filter criticism or it will always screw you up in the end. Accepting criticism can help you course-correct and produce better/happier, but isn't a requirement for success.