My mom is, it didn’t pass down to me or my brother. I suspect she was born left handed (that did pass down to me), and it was "corrected"out of her, now she’s equally klutzy (read not at all a klutz) with either hand.
One of my recent work places actually had 1:1 left to right handed people, in a group of 12, there was even one guy who insisted on using the mouse with his left hand (we shared a couple different terminals and you could tell when he was the most recent one to use it). That man was a monster.
Not equally myself, but you get used to doing things with the non-dominant hand surprisingly fast. Started using lefty mouse due to arm pain and maybe a week or two gets you to non-awkward basic usage.
I mean, give me a knife or screwdriver and it’s equal, but anything that requires extensive practice for basic competence is naturally going to be become focused on one hand (e.g. handwriting) or a specific combination of hands (e.g. you need two hands to play guitar, but people will generally learn to play it either righthanded or lefthanded and suck at the other one regardless of how ambidexterous they are).