I mean, I guess, but are they really?
As an esports fan, I can say that I want my sport to progress into the mainstream, to be considered on the same stage as football, hockey or motorsports. With this, it's only natural that salaries would reach to similar heights.
These salaries we are seeing right now are still not bigger than salaries in "regular" sports. So for esports salaries to be considered inflated, you also have to consider salaries in other sports to be inflated, which I guess is also true, depending on your opinion.
If the two sports were of the same size, s1mple and Ronaldo would be making the same. Do both have inflated salaries?
I also want to add: for every team that pays their players the numbers that C9 does, there's 100 other teams, playing under smaller organisations or no orgs at all, that hardly get paid enough to live off, if anything. I'd say if you averaged out the salaries of every single CS:GO player in the Top 200 HLTV rankings, if they were all known, you'd reach a much lower number.
On the contrary, if you would average out the salaries of every player on the Top 200 football teams in the world, that would still be a very large number.
I think esports salaries are fine and as long as other sportsmen are paid a similar amount, I think they could keep growing. It's a growing incentive to join the sport and compete, which will only grow the scene further. It's always easy to say "well he's getting stupid rich just by playing CS" but in the same way you could say "he's getting stupid rich from kicking a ball into a net".