Tochkas are most useful against static targets like infrastructure, storage facilities, massed troops, etc. if things kick off Ukraine will likely have a reasonable amount of notice thanks to Western intel and likely reposition a lot of stuff, get aircraft up, spread out troops, etc. sure some stuff will become casualties to cruise missiles and the likes once Russia starts getting intel from things like UAVs and satellite or people on the ground. Your thinking seems quite top trumps centric but war in reality often isn't like that.
You do realize that even if Ukraine gets its planes up, the Russian radars can pretty much track majority of Ukranian airspace from Border, Crimea and Belarus.
It seems like Ukraine has been getting a lot of notices and showing zero care.
Or you are saying that US is being a drama queen? Because if not, they should be mobilizing right now
Those planes airborne are just as useful as on ground.