I have tested this with the laser designator , hunter gmg and kamysh apc.
I haven't tested the clouds yet but i doubt they work correctly.
Anyone with knowledge is more than welcome to add to the subject as my knowledge is only in the physics behind these machines and not on the devices themselves.
An other thing to note is that thermal imaging of a soldier changes with night/day (which is already simulated in arma 3) , just not to confuse with climate and season change.
Also this is not a balancing/nerfing thing , it is about simulating properly IR vision like in reality.