Jay is the craziest TF2 player of all time. Its built into his personality. He's so unhinged that he uses discord push to talk activation and deactivation sounds.
Crit rate scales based on damage dealt in the past 20 seconds, capping at 800 damage. Normal weapons scale from 2.5% to 12.5%, but melee weapons *start* at 15% and cap out at 60%.