"Support from your diaphragm" or "Sing in your mask"

You hear these phrases thrown around all the time...Are these phrases sometimes confusing? Or have you tried some of these things but it doesn't seem to help the way you hoped it would?

It can be confusing...There's a reason for that

There's a lot of confusing information and misconceptions out there about singing. Sometimes the advice out there is just plain bizarre. It's hard to know where to find practical and effective information.