Hah! True :-)

The thing is, smashed stacks are difficult to exploit deterministically or automatically. Even heartbleed, as widespread as it was, was not a guaranteed RCE.

OTOH, an exploit in a language like Python is almost certainly going to be easier to exploit deterministically. Log4j, for example, was a guaranteed exploit and the skill level required was basically "Create a Java object".

This is because of the ease with which even very junior programmers can create something that appears to run and work and not crash.