

There are plenty of people whose first language is English and who have confused, or still confuse, the two things anyway. As you say, it’s at least partly cultural. They don’t really teach this stuff at school, or at least they didn’t when I was there.
I was one of the confused people once. Then I learned better (and I’m still learning).
I think what’s important is that we’re willing to learn.
Depends how Picard ended up in that situation. Are we talking the “natural ageing and eventual death” kind of entropy or are we talking “somehow invulnerable except at the quantum level in an infinite void of nothing, awaiting quantum decay”?
In the former, Q would only save Picard temporarily to make a point or for one last adventure. Q won’t help indefinitely and entropy wins.
In the latter, Q’s probably the reason Picard is in that situation in the first place. There’d be some jape or point (“now you know what it’s like to be bored as a Q” or somesuch whiny nonsense), but Picard would eventually be back in his regular time stream, at which point we’re back to the first scenario.