I doubt there were many who believed that. Talented trash but still trash, GMs gamble on them every year. The minority turns into gems.
http://bbs.clutchfans.net/index.php?threads/marquese-chriss-as-an-nba-player.293198/ 29.2% of people said he was already a decent player. That poll was before he ever played a single game for us, so it was based entirely off his time in Phoenix. Sure, that's less than a third of people thinking he's good but how does he get that high when he's been trash his whole career?
There are trolls on this site, if you have not noticed. The talent evaluation of some is suspect at best.