[JasonC]

Go that slow in real combat for 20 seconds and you are hamburger.

[Hillarys Gate Cult]

Exactly. Several pilots from Western forces interviewed about the Russian Cobra Maneuver pointed out how in order to do it a pilot has to lose airspeed, the last thing a pilot would want to do in air to air combat. They would be a sitting duck. It does look impressive in air shows.