That will not solve the problem to the average user.
Also, even if all sources are verified, it is already very trivial to create a new publication or a "news" source and make it look legitimate in a few months.
Agreed on the modal user, but two quibbles:
(a) how often does anyone follow secondary sources that are only a few months old?
(b) it is less trivial to create new primary sources. (not that publishers are in the habit of giving easily followed references)
Also, even if all sources are verified, it is already very trivial to create a new publication or a "news" source and make it look legitimate in a few months.
It's a very messed up situation.