I always check out the account of the new followers and sadly quite a lot of them fit into a certain profile ~ joined for a short period of time, relatively low rep sometimes even below 25, and following 1000s of people. I always cringe when I see that, and all I can say is thank you for boosting my followers numbers. Are they likely to read, upvote and comment my post? I doubt it, hope they do one day.
For the same reason every now and then I prune my following list to remove dead accounts or those whose post no longer interest. That not only makes my feed more manageable but hopefully also helps to give the impression that I'm interested in quality only.
Thsts