moog problem solvers creating problems....

So.....and I'm not arguing here, just posing a question. Why were they not used from the factory? Of all of the upper arm bushings I've replaced, not a one had those washers originally.
my OEM bushings had washers pressed in them that looked like this:



1710251947554.png

I just installed my control arms this past weekend with the moog bushings, had a little trouble on the passengers side getting it in. I had to get the front and back in at basically the same time. start the front just enough to catch it, then try catch the back. I needed some slight persuasion with a deadblow/rubber mallet to get it in.