Interesting takes. Depends on how you look at it, I suppose.
I don't agree with the OP that Afflalo should be on any list. It was a good trade for a sixth man that didn't pan out due to injuries to other players forcing him into a role he wasn't suited for.
Obviously, the worst Blazers ever were end of bench players or others who had some kind of contract but never made the team. Guys no one remembers.
I liked El Presidente's take that LaTex was the worst ever, based on the way he took a possible contender and ruined it. That's way worse IMO than a draft pick who just didn't pan out.
How about players who got paid a gagillion dollars for not playing? Guys like Steve Francis who got paid $34 million dollars to not play. Or Raef LaFrenz, who was one of the highest paid players on the team but only played in 66 games in two seasons, averaged 9.7 minutes, 2.5 points, 2.1 rebounds and 0.4 blocks, then sat injured his third year while the Blazers attempted to cash in on his "super expiring contract" mirage. RLEC was a bad player. And then there's Brandon Roy ....