> I follow around 1000. I see almost zero spam. This whole thread is pretty confusing to me.

Same here. I suppose I could go find spam if I start clicking on every Tweet from a high-profile person and scroll to the bottom of the comments, but the spam isn't jumping out at me on a regular basis.

I suspect some people have a very low tolerance for any spam appearing anywhere on a platform, and will get easily triggered whenever it crosses their experience in any way. If you're consuming 100s or 1000s of Tweets and responses in a sitting and scrolling to the bottom of threads, eventually you're going to see something spam-like.