I think they try their best - and yea - even if you look lower down on the "Streaks" list you see lots of profiles that have very generic profile pictures - generic titles and who communicate very bot like responses.
I also think there are lots of people on here engaging for the sake of it so their language could be interpreted as bot-like as well
@shezzy04 They have similar biographies like “Hi, I’m .. years old, I’m a ...” they take names like John Smith, are usually active for a couple of days, and then disappear.