As a test, I posted similar Caturday posts on social platforms to evaluate my engagement. Here are my anecdotal results:
* #Mastodon - likes, boosts, replies, and follows
* #Bluesky - likes, replies, follows
* #Instagram - likes, replies, follows
* #Facebook - likes, replies
* #Threads - …
Even on Bluesky and Instagram, where I have very few followers, I still get some engagement. On Threads no one can see me, even my followers. They have no way of knowing that I posted anything.