If you invested your own money in AI do not worry about Gary Marcus, he will have little impact on when the bubble bursts. I for one welcome the skeptics because the amount of hype needs to come down a bit as it is currently at astronomical levels.

god these arguments are empty, personal and without any substance whatsoever

Yes, sorry, the internet unfortunately works this way and even though we are trying everything we know to dampen this stuff on Hacker News in favor of more thoughtful conversation, it seems we can only tweak the margins somewhat.