If the money generated from gaming soldiers is used to support their wards and family in the barracks or improve facilities and artilleries it won't considered a complete waste for the heads in charge of the business. The soldiers lose money directly while the military win indirectly. They could support themselves this way, if things get well organized and coordinated regarding the organisers. Also, the soldiers should be made aware of the harsh effect of addiction .
The war in Ukraine has been going on for 3.5 years, and during this time there have been several reports stating that the military are the primary group of people losing money in online casinos. Especially in the first year of the war, they were receiving relatively large payments for being on the front line, and most of those payouts were lost through gambling. So this is an extremely common problem among soldiers, particularly during a time that is far from peaceful.