It would only be unethical if you dispute inqs that were valid. A CA that doesn't list collection activity as the PP and attempts to pass the pull off as if you applied for credit is an unauthorized inq and I have a right to dispute it. If you applied for 10 CCs and disputed all 10 pulls as not mine then yes that would be wrong.
You do realize that you have to be careful to only dispute inquiries that you were DENIED for and not an active TL?
The CRA will delete the positive TL from your credit report and then contact the Creditor and tell them that since the inquiry was obtained fradulently, the account must be fradulent, and the creditor will CLOSE YOUR ACCOUNT.