“Trust x,y” will also basically never mean “trust, completely, always, equally, and blindly”.

Trust the science was a shorthand for “you, or even I, may not understand this thing in perfect detail, but the people working on it do, and they GENERALLY aren’t making catastrophic mistakes that you can detect as an amateur. And when these people collectively stand behind a conclusion the odds of it being completely wrong are exceptionally low. We don’t have a more accurate alternative regardless. Please stop JAQing off about it”

But writing all of that over and over again is annoying. And a lot of “”””critical thinkers”””” can’t be bothered to read it. So the shorthand emerges. Sometimes used incorrectly? Definitely.