The word "thoughtful" can carry different meanings. It can have a literal meaning (as in "deliberate") which you resonate with, and a different meaning (as in "solicitous" toward AI) that I resonate with. Neither meaning is wrong.
Oof, are you using a thesaurus to determine the definition of a word? That's what a dictionary is for; a thesaurus is a list of words that have similar or opposite meanings. But within that, there are varying degrees of how similar/different words can be.
In point of fact, Merriam-Webster doesn't mark "solicitous" as having the strongest degree of similarity to the word, which means we can't easily conflate the two because they're not quite the same thing. Further, for the "solicitous" word you cherry-picked, it says that thoughtful means "given to or made with heedful anticipation of the needs and happiness of others".
That means that for the sake of the conversation with regard to the decedent, the word "thoughtful" as used by GP is still very vague. He thought about other people, simple as that.
Preceding the use of that word as an example, it clearly says "having thoughts" as the definition. Between the blog he posted, the interview he gave, and the fact that he was assisting an active investigation, I'd say that he both "had some thoughts" and "heeded AI".
Again, we're back to the fact that you're suggesting that it's cool to flag a simple "condolences" comment just because you disagree with how the decedent viewed the world.
If I had seen the thesaurus and dictionary links before posting, I would not have posted at all. I however maintain that this guy failed to see the big picture of AI, letting his judgment get clouded by a stupid IP law that serves capitalist publishers at the expense of the people. I speculate that he let this hate of AI bother him so much that he could no longer live. Extinction is the fate that awaits all those who come in the way of AI.
Reference: merriam-webster thesaurus