FILMED IN 1973 !!!!

I got this and it said 1981... So I figured ok another bad Bo Derek film. She's the only thing that makes me think these movies even exist there so bad. Then I watched it and immediately a few things came to my mind... She has not blonde but white ( dyed apparently ) hair since Bolero or Tarzan whatever bomb came first. Second she's a brunette for real. I think I like her better with the off white hair. And I was like this couldn't be after 10 !!!
Then I'm like she's just a kid in this movie and married to John Derek ? It wasn't make in 1981 it was apparently made in 1973 !!! ... What happened to the rest of the years leading up to Bo in 10 which was what 1979 1980. Which thank goodness she appeared in a good professional film for once. And I believe she had brown hair in that film... I haven't seen in a while I forget... But jeez I scanned through this film couldn't even watch the scenes it was so embarrassing. Are people just dumb who make bad movies. Honestly there is a lot more bad movies in the history of film then good or great movies... I never understand why people insist on making bad movies. Aren't they aware. Don't they know... I wasted too much time watching bad movies. But this one I don't think I could watch it. Bo is just too young and the movie looks stupid. And she's not even her usually sexual self in it just a teenager who's afraid of sex. The film was just so old it seeing her in it freaked me out a bit...