Help me decode what "you were signposting" means?

[isthissignposting]

I said as part of general chat about traditions and rights of individuals:

"I don't think rights and respect of individuals should be at the expense of other individuals, or large groups of society. I agree that society evolves and that greater tolerance is a good thing. But teaching tolerance to children should not involve exposing them to adult ideas which are beyond their understanding."

They said:

"Your views were pretty strongly signposted. I really don't think further discussion would be positive."

I am not certain what they meant by "signposted"

Also would you say that what i said was offensive?

You are entitled to your view and your friend is right to avoid discussing a topic that’s going to end up in an argument with you.
Your quote in the OP isn’t absent-minded waffle. It’s clear and you sound confident about your viewpoint which happens to be very different from hers. Next time avoid the topic (trans activism ?) if you want to stay friends.