I see random accounts occasionally following me, and it's clear that they're just casting a very wide follow net to see who will follow back, presumably to get their readership up. To me, that's spam, no question about it. Even if it's targeted. (Targeted spam is still spam.)

I want people to follow me because they're interested in what I post, not because they're looking for me to follow them. Perhaps I'm asking too much of the platform, but... it is what it is.

I have had a Twitter account for I think close to a decade that I never use. I’ve never tweeted or followed anyone. Last time I logged in which was probably over 2 years ago, I had dozens of followers, all following nothing!