If these popular exchanges didn't do a verification process before listing it is very irresponsible and how can we trust them?
This shows how badly trained the employees of exchanges that come up recently have been and how loosely they have listed projects tokens on their exchange without doing some basic checks.
To answer both of you, they don't care!
Even if they do a superficial verification and find something fishy about this, only one thing will change, the price the team has to pay for the coin or token to get listed. Hotbit for example has 1608 pairs according to coingecko from the 800th place they fall under 1000$ volume a day, what kind of coins do you think those were, pump and dump schemes that paid their place made a few $ the exchange made a few $ in fees and the investors are looking at a useless stash.
And the most infuriating thing is that if they do take some action they will pose like the ones actually caring and praising themselves how they protect their customers and how attentive they are to what the community has to say.
$ is everything that matters, if it weren't like that after so many scams things would have changed but nothing did.