I never understood that hope - I mean I know it's based on the behavior of other viruses, but it was already thriving in the Southern hemisphere in hot weather, and parts of the Southern US too.
Unfortunately we can't assume any group of people are as well-informed as we are (just from this threads!) Some people don't even have Internet. They're not necessarily watching TV news. And even - perhaps especially - for those who do have those things, there's a ton of misinformation out there. Or just plain confusion, especially with all the different terminologies (self-quarantine, shelter-in-place, lockdown).