I have some experience and opinions about this topic of fake accounts and malware and scammers.
A while ago, older accounts were very popular to upload malware. I literally have seen those in the hundreds. In a few months.
The problem is, that Itch wants a low entry bar. Which includes not needing to pay "large" sums to even be able to publish something. Steam asks $ 100 upfront. I think they reimburse the dev after the account sells things. And they do a little more than just verify that the developer is real. I do not know the procedure that Patreon has, but I got the impression that it takes time. Maybe money as well. But Itch does not want to lock out developers and hobby game makers that cannot afford or literally can't send those payments.
Also, are you suggesting a mere increase in verified accounts or basically a strict verification for all publishers? Because a mere increase in verified accounts will not solve the problem of fake pages. There are more than enough legit developers that will not be verified for the scammers to hide among. The developers that would be able to get verified usually do not need to. If you have a few hundred followers and an active community, there is trust. No checkmark needed.
You need trust for unknown and new developers. But this will not be possible on the cheap. The pragmatic solution is to use sandbox. Either by playin a web game or by using a sandbox system on the user's computer. The Itch app provides a poor man's sandbox. One can wonder why such a feature exists in the Itch app...
Anyone that is in doubt about trusting a new developer should use a sandbox, just in case. There are other things an amateur developer might screw up on your system without intention. The sandbox should at least safeguard browser cookies.