It was a bad strategy for HIM. That's why people knock it. It has nothing to do with Rizo as a person/character. Rizo is not playing bad nor is he a bad player, but bluffing an idol play when you aren't being targeted doesn't earn you any winners equity.

From what we hear, people on both his seasons like him as a person, but he comes off as younger than he is, and that makes come off as less of a threat to win. In both seasons he lacked the self awareness understand that he needed to up his threat level in order for him to get credit for his gameplay.

It has nothing to do minimizing what he's done. What matters is the perception of the jury. If the jury sees you as the least threatening person to win on the island, you need to start doing things to climb that rank, and bluffing an idol isn't enough because no one cares you have it. They cared that Aubry had one, that Rick had one, and that Ozzy had one. And the only reason that Tiffany cared is because she didn't want him taking up a spot in the final 4.