I have better example, but for daily tasks. If you have to destroy bases in arcade air battles, you have 99.9% of chance to have a game without bases. I leave with 0 death. Gaijin punishes me giving the next 8 battles without bases too. But i leave 8 times with 0 deaths.
Other thing makes me leaving further is my K/D management.
My stats are very poor, but recently i began to give more attention at my K/D, so when you are uptiered and your team is going to lose, i prefer to quit. Why to worsen the already bad stats of my vehicles?
This is your average teammate in War Thunder, they actually think this and do this
You mean competitive games with dedicated ranked and esports scenes in a genre with a big ranking culture? Maybe if WT had ranked you can punish people there, but as of now there is not a ranked system. 1DL is just a result of bad map design, poor QoL, poor match variety / objectives, premium vehicles being sold by themselves to newer players and the long-lasting compression.
So what you’re saying is it’s a result of a whole bunch of things the community has been telling Gaijin for years are problems, and Gaijin has just totally ignored? What are the odds that a developer completely ignoring community feedback would result in their game turning to garbage…
who woulda thunk
And who would have thought that so many people here continue to play that “garbage”? Some play 24000 battles in under 5 years.

And thats how you lose your business folks
Getting back to OP’s original point, player reporting only serves a function if it saves time in getting things fixed… the company can’t moderate all chat, so reporting chat griefers makes sense. The company can’t view all replays, so calling their attention to the one replay with a teamkiller in it makes sense.
One-death leaving is statistically and mechanically detectable. If Gaijin wants to do something more about it than they have, they can easily find out who’s doing that. So player reporting of it adds no value.
The more things we add as “things players report” the less time Gaijin’s finite human resources that they assign to complaints (not saying they couldn’t add more, but it would still be finite) would have for the other kinds of complaints we also want to see more action on (like team killing or botting).
The games that successfully avoid this tend to have some kind of added mechanic to valorize the people who DON’T ODL. My crazy idea would be to create a new option to join a game midway IF a bunch of people on one side have noped out, and be rewarded with something extra special (double RP/SL plus a custom frame, idk) if you did so a bunch of times. Yeah, your W/L record would suck, you’d be going into a bunch of already basically lost games, but if you incentivized it enough some people might relish the challenge.
Another idea would be if someone clearly ODL’d when they still had the SP to go back in, give everyone on that team that stayed a 5% SL/RP boost per leaving player, IF after that point they stay to elimination or game end, so up to 75% if everybody quits and you’re on your own. At least then those who were left behind wouldn’t feel so bad.