Yes, people dislike RNG, planes smashing into their infantry squads wiping them, maybe they should plan their strategy around that happening.
Plane crashes not an RNG, they just stupid. You have no control over them whatsoever.
You have perfect control over blizzards harm in comparison.
I like how tank combat in CoH implemented, but its depends on RNG by some extend. Now following your logic Relic should remove whole armor/penetration mechanic. Yeah, sure, lets make game totally arcade, because there is not enough of arcade strategies already.