They should expand the message that people see, when they get restricted.
I see this issue of missing information at several places on the Itch pages. Crucial information is not where you would expect it.
Other than that, what message would they write, and where. No one reads the community message board. Not in any significant numbers. I suspect that the actual false positives is not that high in relative numbers, but only apparantly high in absolute numbers.
From developers and users's perspective, the spam filter is not tight enough. We can see spam every day. I just saw another hacked account spamming hundreds of messages about a devlog that links to a patreon file.
Protecting new users that do not yet realize how much malware there is on Itch, is important. The issue is that false positives seem to wait maybe a month. And that the filter is not good enough to block all.
They might adopt a better system for that. Like recruit help from the community in some way. Analyzing behaviour of established members could be a start. I would imagine it should have more weight, if members in good standing hit the report button. Or give clearance to comments on their developer page. That behaviour could be scored, so a system would know who gives accurate reports/greenlights comments. And that data could be used to reduce response time to block spammers and unblock false positives.