I don’t know if this changed, but I could have sworn that every Guru user had the ability to request verification for a lapsed card, regardless of whether they were a Read-only, Author, or Collection Owner.
I then found this Help Center article stating the opposite, that it’s exclusive to just Authors and Collection Owners and wondering if this is new or I just had a lot of Authors in a previous instance. 
No changes here, only the Collection Owner and Author users can request verification. 
Read Only users can comment on the Card with or without @ mentioning another user to signal they have a question or have spotted something in need of updating.
I’ve found a Product Feedback post asking Guru to build the ability for Read Only users to unverify Cards, so I’ll merge this question here within it. 
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