If we look at his stats for 2020 against top 30 opponents. Look at s1mple's gun ratio.
If you do maths.
45.9 (his % of awp bought/used) / 12.76 (his % of AK bought/used) x 100 we get a multiplier of 3.59717868339
He has 319 AK kills in 2020 against top 30 opponents. If we make it the same ratio as how much he used the AWP. We would do 319 x 3.59717868339. We get 1147.5. Oh, what a coincidence. He has 1145 awp kills.
tl;dr : Maths proves s1mple does not abuse the awp