There is wisdom in what you say.
Living long isn't my goal, I just want to live well while I am here. Seeing a dog waking from anasthesia it is perfectly clear that they were fine being dead and don't really want to wake up into life again.
But medical studies come over my feed from time to time and I like to think. So I try to work out what they mean.
Getting the waist down, getting plenty of sleep, avoiding stress, building meaningful relationships, these are all highly coorelated with longevity, as is socioeconomic status, and having an active lifestyle.
As for "fast and fried food away from home" being coorelated with longevity I was thinking:
Socializing: people who eat out tend to do so with other people... although I see a lot of drive through loners too.
Economic status: fast food isn't actually cheap.
Ability to leave home: it excludes invalids who can't travel.
Canoia oil: this aligns with all those other studies that imply canoia oil is actually a super healthy food. Therefore:
a) either foods fried in canola oil are healthy, or
b) this study is another devious trick to get us to buy and consume poisonous canola oil.
I'm not going to argue for either of those views because the seed oil argument is not interesting to me.