Well, that's disappointing, but basically the information I had was from someone using the latest betas saying that the writes to the docker image for him had decreased by multiple times, so I wrongly assumed the issue was fixed by LT, possibly just a result of other changes, still I can confirm that at least on my test server the information I got was correct:
Writes to the same docker image after 5 minutes, v6.9-beta1 vs v6.9-beta22, also note no increase on btrfs-transacti:
Now idea if there will be a difference to everyone, please try and post here.