Ask yourself how many Yeshivish families would agree to a shidduch with a boy who wears a crocheted kippah (even if he also wore a hat, and if he DIDN’T wear a hat, then it is not even in the ball park).
You are still mixing the two things up.
Respect ? shidduch compatibilty.
You used an example where I happen to think prejudging comes in handy. If you somehow think yeshivish are terrible people for automatically turning down a shidduch with someone who wears a kippah srugah, just realize that it works both ways. A MO family wouldn’t want to consider someone with a large black velvet yarmulka and long peyos either.
Even were you to make the assumption that someone with a kippah srugah would have the exact same hashkofos and cultural bent, and therefore a good shidduch prospect, you could only blame them for prejudging, but not for considering the external as more important than the internal.