I don't think that is what they were implying. Conservatism tends to be about not changing or considering new things. It tends to be more "I was raised that X w

I don't think that is what they were implying. Conservatism tends to be about not changing or considering new things. It tends to be more "I was raised that X was wrong, so X is wrong". (It is how I was raised for sure.) So, if a historically conservative person tries weed and it doesn't turn out to be the all encompassing evil they were lead to believe, it may open them up to forming new personally verified opinions on other issues too.