The idea that Ted changed the details of How I Met Your Mother’s story reshapes the series, with the theory ruining some of the sitcom’s most-loved moments. Debuting in 2005, How I Met Your Mother was a hang-out show with a laugh track about six friends navigating life, love, and work in New York, so it immediately needed to differentiate itself from Friends. Friends had recently finished its legendary ten-season run and How I Met Your Mother could have been accused of stealing the show’s premise if it weren’t for one vital change.

https://screenrant.com/how-met-mother-ted-narration-theory-ruin-scenes/