Show me a 20 pound drone and I will agree. This is more hype than anything else.
Swans and geese have routinely been seen above 20,000 ft, and hitting one or more of them at cruise speed will make for a bad day, ask Sully.
Bird strikes are common, and rarely deadly.
99% of the drones stay under 1,000 ft and weigh less than a parrot.
I agree with most of what you say but the typical outdoor multirotors capable of higher altitudes would weigh 3-5 and some parrots weigh a lot less (my small parrot weighs 3-4 ounces and my largest heli weighs 2 lbs).