While your comment could be true, if it were phrased as a hypothetical, there isn't anything that could bring an "evenly matched conflict" to the US. The US military capability is literally approaching two orders of magnitude greater than almost everything else on the planet.

And nobody flies aircraft at "treetop level", with the possible exception of the A10 which is designed to and actually has flown home successfully after a missile hit. https://theaviationgeekclub.com/a-10-pilot-explains-how-the-...

Also there is no such thing as a "MANPAD", it's not a plural -- it means "Man-portable air-defense system".