If I were in China, I'd worry about the kind of things DeepSeek wants to censor, especially if the people who made it were also very loudly saying things like "we need more AI in our government". But I live in US.
99% of the time though I agree with you on Gary Marcus.
[0]: What Musk has said is that when Grok 3 is "ready" (?), the previous model, Grok 2, will be released as open source; like most promises by this evil man, this one probably doesn't mean much, but it does mean that there's currently no plan to release Grok 3.
GM has been a joke for years now. At some point his ramblings reached a GPT3.5 level, and have not improved since.
It's inditement on humans' logic and reasoning to give non-zero time to GM. Alas—we are human, we are both collectively clever (Wisdom of Crowds) and collectivelly stupid (Extraordinary Popular Delusions).