I think somebody's not clear on what is and isn't conservative.
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What do you mean? Disagreeing with something doesn't mean one doesn't understand it
Homosexual unions, for instance, is not a conservative ideal. Homosexuality for many reasons has been taboo, much less marriages among same.
Also, living together without being married is something that people do, but the common law, recognizing that bonded couples raising children create a stable society and protect women, make a couple living and making common cause together, married, requiring a divorce to part.
These are at least two liberal practices mentioned in the article.