zahavasdad,
You can and should ask politely, but if the person says No, dont call them a Secular Frum hating anti-semite.
You want a favor from someone who wont give it to you and then you call them an Charedi hating Chiloni.
If you read notasheep’s story, she didn’t consider the man to be anti-Chareidi simply because he said no to her request, but rather because of his subsequent contemptuous attitude and passive aggressive behaviors towards her.
I don’t see any evidence that the Chareidim mentioned by the OP or notasheep acted rudely towards anyone.