So the most advanced tanks in the world - like the Leclerc, M1A2 Abrams, Leopard 2, and Challenger 2 - are "dilapidated and outdated"? I don't think you're using those words correctly. That applies to Soviet-era tanks like the T-62 and T-55 that Russia is throwing into the fray to make up for all theiT-72s, T-80s, and T-90s they lost and can no longer update or repair.
And the reason NATO is NOT sending troops, contrary to what Russian apologists like yourself enjoy claiming, is that it would mean a DECLARATION OF WAR by NATO! That escalation you keep saying you fear, that would be it. Jeezus, this is embarrassing!