Again I’m not the person who wrote the comment, but I think they were exaggerating for effect and maybe lost the audience in doing so. While “computer” has meant the same thing for many decades now, the term “intelligence” really does seem like a moving goalpost?

I think it's only a moving goalpost if you can show that the goalpost has moved with a new definition that fits our current usage of it. The people saying "this isn't intelligence", and then claim "we don't even know what intelligence is", are encouraged to offer such a definition.