My mother was offered those edited films when she ran a video rental store. I was sitting there in a corner doing nothing at the time and a lady came in and started talking about how this one recent film said "damn" and such and such, and she just went on and on, and my mom just said I'll get back to you on it.
Guess it was fine to use those words in front of a 14/5 year-old.
She worked for Blockbuster for years and years and years. Nobody wanted that stuff. Most parents didn't even pay attention to the M and T games they were renting their kids, and this was before the Grand Theft Auto uproar.
I went to school with people in middle and high school that didn't use bad words, but they were doing other things that were even more inappropriate and heartbreaking.
Just censoring something for bad words does nothing. The content itself matters more.