If you look at twitch streamers, for example, you will find that there is a lot of drama amongst even the most popular ones. They rage hard and even smash screens, keyboards or throw stuff around. The difference between a "normal player" and a popular twitch streamer is that a twitch streamer has to be very, VERY careful about just how toxic he or she gets. A regular player can get away with a lot of nasty stuff just by the fact that they do not have hundreds or thousands of people following their every move.
There is a difference though and you will find that in the highly competitive league, those who play professionally for a living. In that area, there is not much raging going on as that would be utterly devastating for the team. That said, when they leave the competitive level, things might be different as it is easier to let out some steam.