WITH ALL MY ACKNOWLEDGE I CAN BE WRONG AND MY KNOWLEDGE IS NOT HERE TO CHALLENGE OR DEFEAT SOMEONE.
You mean only Americans know all this and Russians are dumb enough designing aircraft without considering these aspects. Americans exactly know up-to their current knowledge about Russian technology and their
possibilities of surprise. Russian are not sending their expensive jets and experience pilots to be killed by unseen.
"Even if no SR-71 was lost due to hostile actions during the entire Blackbird career, the Mach 3+ capable spy-plane faced an adversary that could effectively intercept it: the MiG-31 Foxhound."
https://theaviationist.com/2013/12/11/sr-71-vs-mig-31/
Now think about Mig-31 VS SR-71 first.
So kindly with all your assessments and expertise be vigilant and have a look into history as well. I think it is good idea to get yourself aware about the capabilities of others by knowing their capabilities in past, despite guessing the future (for the safe-side until you are playing a key role in higher hierarchy of top intelligence agency). For your knowledge Russian Mig-31 is still in service, but the SR-71 is not, hope you know why. Americans have defeated every one in media, their products are very superior (according to them) but when you go beyond their war history you will know otherwise.
No body let public every aspect of a fighter and fight. American establishment and CIA has failed quite many times to learn, Russian know how to defend their country. They were blind too before U2 and SR-71 incident over Russia, but after wards they don't dare to fly there even after SR-71 or SR-72.
We are not here to win or lose we are just shearing our knowledge.