OP could then go into his "Post Filtering" settings and under "Marketplace -> Lending" could enter an expression like: exclude($memberRank < 2) (where 0 == "Brand New", 1 == "Newbie", 2 == "Jr. Member", etc).
I've seen similar suggestions before. Why not make use of the self-moderation feature? It could even be maintained by a user bot.
I have no skills creating code.
How does the above prevent newbies creating their own threads seeking loans? From what I can tell, my own recollection is that most newbies in recent times are asking for loans without providing collateral or with goods that are not crypto related which is contrary to the "unofficial" (wink wink they are official when we want them to be wink wink) rules contained in threads pinned to this section with titlas such as "no collateral = no loan" or words to that effect.
These rules aren't enforced by the admin/mods, do either we get admin/mods who do enforce the rules, OR, we change the rules by banning the newbies and Jr Members.
Until then newbies and jr members will continue to receive negative trust feedbacks and flags as appropriate.