This is silly. A $200k deal doesn't come with preferences and if it did it wouldn't matter anyways, because $200k is a small fraction of even a marginal exit.
If you take a number which is for argument sake and call it "silly", that is fine by me. To argue that liquidity preference clauses are the ONLY method to avoid the principal-agent problem (and that's not the only reason it's there in the first place), both you and I know that there are other, more entrepreneur friendly, methods to go around this issue.