Well at that point the word "suck" becomes very relative. For example, there are those handful of professional athletes in the NBA, NFL, NHL, etc. that are called trash on a regular basis, but, to be objectively honest, saying that about anyone at such an adept level of play is ludicrous.
I sometimes feel that "not sucking" is not about how "good" you are or about what plays you make, but more along the lines of how consistent you are. If your performance is consistent and satisfactory, and you're going anywhere but down ELO ladder then congrats, you don't suck.