They wouldn't make that movie today. The 70s era "boomer" comedies were far more subversive than much of anything in the mainstream movie business today. Instead of Animal House, now we have Old School or for the teens some lame humiliation theamed teen horror movie where people get tied up and mutilated in a college dorm.
Seriously, Animal House is 'subversive'? Sure it makes fun of the establishment and those in power, but on that scale so does Office Space. Or Borat. Other than M*A*S*H, I'm hard-pressed to point to a film that was more subversive than what you can find now.
Even stuff like the Bad News Bears wouldn't make it to the screen now. That movie was a big "F You" to the man. Kids swearing and smoking cigarettes. A drunk adult who's the worst roll model on earth. All of them standing up against the people in authority who ran the little league. Today you get the happy ending BS of movies like The Mighty Ducks and School of Rock. No edge. No subversion. Just safety and hugs.
Now there's some truth mixed in with that, but I'd argue that there is NO film in existence similar to Bad News Bears. It's unique. It stands alone. That's not the 70s, that's Walter Fucking Matthau taking his Odd Couple character to the next, necessary level.
All that said, I do miss smoking on TV and in movies. And when people do smoke, it seems too affected; half of them can't hold their goddamned cigarettes right.