Well, my point is that everyone seems quick to blame the 210 pilot for
failing to announce something. You can't really blame him for not
doing something that he's not necessarily supposed to do.

You can, on the other hand, blame the 152 pilot for using a runway that
was already in use.

The 152 pilot (and every pilot) isn't supposed to rely on someone
else's radio announcement. He's supposed to account for NORDO traffic
himself, and visually confirm that it's safe to proceed. If he didn't
bother looking for the (effectively NORDO) 210 at the other end of the
runway, what else didn't be bother looking for? The NORDO planes in
the pattern? The NORDO plane on final for 9? The NORDO plane on final
for 27?

I suspect the 210 was using 27 because he thought the winds favored it,
and the 152 was using 9 because it was closer to the restaurant. He
was in a hurry and not looking out his windows. This is the good
example of the bad idea.