Is this a logical fallacy? (if so, what s it called)?

imagine person #1 has only seen the trailer for a movie and is already calling it the best movie ever. everyone tells person #1 that it s unreasonable to already assume it s going to be that good. then, when the movie comes out, it really does turn out to be great so person #1 starts claiming that everyone was... show more imagine person #1 has only seen the trailer for a movie and is already calling it the best movie ever. everyone tells person #1 that it s unreasonable to already assume it s going to be that good. then, when the movie comes out, it really does turn out to be great so person #1 starts claiming that everyone was wrong to say they were being unreasonable, despite the fact that they made their original claim before they had even seen the movie.

so did person #1 commit a logical fallacy by claiming they were right when they made their original statement and, if yes, what is it called?
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