In any team sport it's a dumb discussion among the community.
Some say Ronaldo, some say Messi, others say Pelé.
Some say Michael Jordan, some say LeBron.
Some say Tom Brady, some say Jerry Rice, some say Jim Brown.
It's always a discussion with sentiment, especially considering the widely different roles of the "goats" in each sport.. and CS:GO even moreso, since device is also, from a statistical standpoint, the most consistent player of all time.
You'll never find a right answer, and your opinion honestly feels a bit more worthless than the usual sense I find on the forums.