Plus in the age of social media, many people actively look for things to be offended about, regardless of the context, so they can take to Twitter or Facebook and start a firestorm. Back in the day, if you wanted to complain about something being offensive, you had to do it face-to-face or pick...
Yep, more films become "classics" every year if we're measuring based on age alone.
Films of the 70's are now hitting 50-year anniversaries, equivalent to how we felt about The Wizard of Oz and Gone With the Wind in the late 80's.
Peter Parker: "Remember that really old movie, Alien?"