Well there’s nothing wrong with having multiple accounts. Although it does seem slightly pointless as it’ll take you twice as long to reach Elite. So although there’s nothing specific in the rules about creating two accounts so you can get around the upload rules, it’s definitely a grey area… and I personally think it’s wrong to do so.
Although an important point to note… Envato implemented the upload limits for a reason. If enough people are creating additional accounts to get around that, so the benefits of the limits are no longer being realised… then you can be sure they’ll do something about it.