You're right. I try to exclude bots I find along the way but more keep appearing.
If there are people in the first table but not in the less, it means less likely they are cut and paste.
Of course, I think quality is better than quantity but if you know who are churning the quantity, then you know something to avoid. So, for those in the remaining tables, sometimes I find them good target to mute and not waste bandwidth responding. :-)