Whether someone agrees with us isn't as important as why.

If someone has sufficiently low standards of quality that they fail to disapprove of even the worst garbage, then they're of little use in distinguishing value from nonsense.

As a great deal of nonsense is not only passively but actively harmful (not just failing to be correct, but inclining people towards error), it is vitally important to tell the two apart. People who can't or won't do this are not only not-helpful, but make our tasks harder.

Strive to have good standards and apply them. Don't worry about being tolerant or intolerant -- the right mix of behaviors will naturally arise from the application of correct standards.