This is a B777-300, which does not have MCAS. The 737-Max had MCAS added because of the larger engines on that model than prior 737s. This is not an issue "on [all] Boeing planes" (which, to be fair you didn't directly say, but what you did say was pretty ambiguous and could easily [perhaps even most naturally] be read to have meant that).
Sorry, this happens a lot to me. For the record I'm not trying to discredit Boeing. I do have issues organizing and expressing my thoughts which results in less than ideal communication.
