They used to be better. Or at least, the thermos were. I got a modern stanley thermos, from 2020. Holds temp fairly well, but not great. Hot coffee brewed fresh in the morning turns lukewarm by night. Ice cold water turns room temp in a day (no idea why that is).
A girl I used to date still had her father’s stanley thermos from the 70s-80s. That fucker could hold temp for ages. Apparently the company got bought out, and replaced the graphite lining with air. Or something like that.
Still, miles better than anything I can get locally.
Wasn’t here back when it happened, but from what I know, it was straight up white supremacy shit. It got defed to death.