That's seriously not true for folks with mild dyslexia. That's why folks don't necessarily find out until adults: no actual difficulty learning to read, but sometimes it results in weird things that weren't picked up on when we were kids. Spelling, for example. Getting left and right mixed up. Certain behavioral traits. More trouble with reading as one gets older and has more to read and/or difficult texts.
Funny thing: I keep getting left and right mixed up since I moved from the UK to the US. It's as though my subconscious understanding of "left" was always "the side cars drive on". Flipping that also flipped the words in my head.
That is quite funny. I'm pretty glad I didn't suddenly get that when I switched countries. Of course, I switched up the two before I did so. I learned to feel for my heartbeat on my left side to tell them apart.
