Originally Posted by Jig Peter
a better system of finding one's airspeed has yet to become general aviation practice
I'd suggest there is a high probability that the reason that is so, is because "general aviation practice" has commonly been to follow the axiom:
If it ain't broke, don't fix it.
As these UAS incidents have been on the increase, and probably already "contributed"
* to major loss of life, perhaps it's time to consider Mr. Pitot's tubes "broke"? There are plenty of other ways to measure airspeed... Surely one less disturbed by ice crystals could be adopted for back-up at altitudes where they're encountered?
* Though the statement UAS "is not cause for Loss of Control" is undoubtedly correct, I think it is likely to be a significant link in a chain of causal events.