The new bot is getting worse and worse, they make more and more connexions at the same time, from all different IPs, this is almost like a DDOS attack... ( https://en.wikipedia.org/wiki/Denial-of-service_attack )
I don't if it is intentional or not.
Maybe they are are just that their incompetent in browsing a site without killing it (they just don't want to be blocked), or that they don't care, or both.