Ukrainians will be getting F Solas soon, let's see if that makes any difference in their fortunes.
And what will draining Russia conventional military strength accomplish? It's not like another country will take advantage of depleted Russian conventional defences and invade...
To prevent another Russian invasion of another country
since you are asking logical questions what has Russia accomplished by attacking Ukraine ?
Indeed.
One of the main reasons the Ukrainian Air Force has been able to stay in the fight is its ability to move its aircraft around the country and still have the enough airstrips with stocked supplies capable of sustaining air combat operations.
Top Ukraine War Lessons From USAF's Commander In Europe
The 542-day-old war in Ukraine offers some stark lessons for how the U.S. and NATO might have to fight a war in Europe in the future.www.thedrive.com
This is but one example.
Ukrainian ground forces were barely visible in the first month of the war but they are challenging Russian ground forces out in the open and on a scale that mujhaideen in Afghanistan never could. Ukrainian ground forces do not have much to show in tanks but they are making excellent use of artillery systems including HIMARS in ongoing clashes.
On the other hand, Russians have exceeded all expectations in terms of challenging Ukrainian forces. If Russia had shown this much commitment to war in Afghanistan, it would have defeated mujahideen and turned Afghanistan into a Russian colony. Russian army might be much stronger than Soviet army of the 1980s though.
Afghanistan is a huge country. Soviets committed only 130,000-150,000 troops. Soviets occupied most of Afghanistan. In Ukraine Russians have made little gains. They barely hold 15% of Ukraine.