I am not sure that somebody going to go CSI Miami style on blown up machinery :) Surprisingly there is very little footage of it (javelines/nlaw/stingers) in the field .
That's not something you can hide from Russia, so why not announce it and give Ukrainians hope and will to fight off the invaders? Joe Biden and other leaders have been making the right decisions by being transparent.
Makes you wonder if that was the point? Get everyone all stirred up about a half hearted invasion so they dump a bunch of currency and weapons into the country to prop up the Ukrainians, then send your real a-list players in to seize the goods. Free resupply and upgrades from all your friends! Now you can move on to the next target.
I'm not an expert but I can't imagine it's worth it for that, factoring in sanctions, increased militarisation of surrounding countries + potential spread of NATO, casualties, Russian equipment being destroyed, equipment that doesn't fit their ammo/can't be supported/etc., and the probability that many of these weapons don't get seized and instead are used against them for years by rebels (the west has even implied they will support this with more - and the weapons we have sent are suited to this and not hugely valuable).
There are no troops coming to Ukraine, but arms are streaming across the Polish border from NATO countries.
Not to mention lots of Ukraine citizens rapidly training as militias as we speak.
The longer Putin waits, the more weapons Ukraine will have.