I chose for neither, and maybe I oversimplified my thinking in this.
I don't see forum staff devoting the time and effort into implementing a system for tracking and banning account sales that would be effective. I might be mistaken but the new method for tracking and storing IP data might actually make that harder. So short of enforcing some KYC or other means to tie an account to the actual person this would be difficult; and going further into peoples private lives in undesirable.
Leaving negative feedback on an account that has been bought does not inhibit that person. People seem to get hurt feelings when they receive it but it's not actually hurting them in any way. They still have full access to the forum and everything in it. That's why I wouldn't want to see it as a ban; this won't affect the account seller only the purchaser. I'm also only interested in tagging the seller of accounts, and the account that was bought, giving the buyer the opportunity to earn their rank by starting from the beginning like everyone else. That option would be unavailable if they were banned for buying the account.
My feedback is for myself and I consider a bought account to be a misrepresentation that I want to be aware of. I use the timeline of when I started on the forum for a lot of things including peoples reputations, so I want to keep myself informed of changes in that timeframe as I may have built up a rapport with an account.
In short I've always been against a pay-to-win ecosystem.