It sure as fuck isnt for everyone.

No. If I had to process all my meat, I'm reasonably certain I'd throw my back out inside the first month. Nevermind fainting at the sight of all that blood. But also, "if everybody had to do their own X" is a tired hypothetical that ignores why we have all these surpluses to begin with. If I had to drill my own oil wells and smelt my own steel and assemble my own fan motors and stamp my own computer chips and synthesize my own techno beats, I wouldn't have anything resembling a modern quality of life.

But raise somebody to kill animals from a young age, and it absolutely could be for everyone. This is, again, a basic tenant of FFA and other such organizations. Normalize the brutality of the agrarian economy before you reach the age where it feels weird. Get a ten-year-old's hands dirty, so that they'll be mechanically slaughtering animals by the time they turn 20. Inure people to the screams and the sad eyes and the horror.

Then everyone can have the mentality of the cast of Texas Chainsaw Massacre.

if everyone could only eat what they processed personally, r/steak would not exist

It absolutely wood and it would be even worse than it is now. A grotesquery of macabre horror that fans would call you a pussy for failing to enjoy.