I would say probably most memeing is not really thought provoking or inducing. I agree most of the time writing can help collect one's thoughts but it can also be completely thoughtless. Probably what matters more is the specific process.
Your point seems to reduce to “bad writing=bad thinking, better writing=better thinking” which to me seems to support the original point, not refute it.
I’m not going to elevate memeing to thinking, no. If that’s the bar then using ai is just as much thinking as writing and the whole “writing is thinking” meme is pointless.