I can understand that s1mple does not think Zywoo is that great of a player. When you look at his skill, it's really good but not absolutely impressive. He has a crisp aim, but it's nowhere near what S1mple or Niko have shown in the past.
His greatness comes from his gamesens, his positioning and his ability to understand every situation he finds himself in. That's why he is impressive: the kid plays like a 10 years veteran and has been in the pro scene for only one/two years (if you count his suptop french teams)
I would consider Zywoo more like a Coldzera than a S1mple. He knows how to play within a 5 man squad and to rely on his teammates to shine. When in a high pressure situation or a clutch, he always plays it perfectly and often manages to win. But that's really far from S1mple over agressive and skill-based playstyle (don't get me wrong s1mple has an impressive gamesens as well, that's why he is top 1)