[hyperpape]

Other commenters are right, one article that lays out the case that there are plenty of times what you say isn't right: https://zachholman.com/talk/utc-is-enough-for-everyone-right.

Use UTC everywhere, then display in the user's timezone is a perfectly valid pattern...for specific use cases. Those use cases are very common, but many people over generalize, and assume that it can handle all cases.