[2021] Enemy crashes server and all players in my team get abandon penalty

I was playing ranked with my two friends and one opponent was sketchy from beginning. Opponents get 3-0 half in attack and after next two rounds we are 3-2 and before round six starts all three of our games crash at the same time and after we start our games we get notified of abandon penalty. This means guy cheating crashed our teams games to get win.

Its not first time enemy has crashed my team in ranked. Its one thing that there is cheaters but its absolutely unforgivable that its even possible for cheaters to crash other players games. Especially since even if cheater/s get banned legit players that they crash get penalties and lose mmr.

How is it even possible that cheaters can do it and when does it get fixed?