Your anecdotal evidence is different from my opinion on it. If I review a movie and say it's bad would you say "if the movie is bad then your opinion is bad?"

Your anecdotal evidence is different from my opinion on it. If I review a movie and say it's bad would you say "if the movie is bad then your opinion is bad?" You shouldn't make accusations without evidence and you shouldn't use anecdotal evidence as the sole backing for a claim.