What does "infiltrated by bots" mean? I'm sure there are some users running scripts, bots, and/or ai's here. Others are obviously just here to pitch their pro

What does "infiltrated by bots" mean? I'm sure there are some users running scripts, bots, and/or ai's here. Others are obviously just here to pitch their product, or seem like shills for various things. But overall - whatever dang & co are doing to minimize the problem seems to be working fine.