He can't be trusted after fumbling the ending of Return to Monkey Island.
Having said that, RtMI feels like Ron Gilbert telling me to go away and do something else with my life. The world is falling apart, the game characters don't care, the ending itself gives up on you and, in case you didn't get it, there's a letter afterwards from Ron Gilbert himself telling you that, if you try to recapture the past, "you'll sort of get what [you] want but it won't be what [you] expected".
As far as I'm concerned, I would have preferred it if he hadn't made the game at all.