Dictators like Putin dare not let their military become powerful. There is too much risk that the military will rise up and depose the dictator. In most NATO countries the military and people believe in the country and rule of law and so they won't do that. However a dictator doesn't have that option.

Russia will make a show of building up, but they will be careful about it. Weapons systems that look good in the demo will be ordered in small numbers, but not enough to make a difference in any war as they would be used against them. Even when they do have good systems, leaders are promoted based on loyalty to the dictator, not how good they are.