that they damage the rental market is but only the first look. because the whole look is. they take it away from us from the reward pool and give us a small part of it back via the rental market ;)
and what's worse, it's not even given back fairly. they take it away from the lower reward pools and through the rental market they give it back to the people from upper leagues for the most part. so in addition it's a redistribution from the bottom to the top