Intentionally crashing/j-ing out to deny score is bannable offense against EULA
From Fair Play: September 2026
>Additionally, 661 temporary bans were issued for violating paragraph 3.2.3 of the EULA, specifically for intentionally exploiting a bug that allowed for gaining excessive mission score in Air Simulator Battles during the Space Program Event.
War Thunder EULA relevant parts
>^(3. LICENSE LIMITATIONS)
^(3.1. The license granted to you under this EULA is subject to certain limitations. Gaijin reserves the right to terminate your License if you violate any of the restrictions outlined in this Section.)
^(3.2. You agree and guarantee that you WILL NOT, under any circumstances, do (or attempt to do, or assist in doing) any of the following:)
^(3.2.3) ^(()^(second section)^())
^(- exploit any flaws or bugs in the Game(s)’ mechanics (exploits, bugs, etc.);)
So stop doing it, we will be reporting it.