Back in my day

It was still done where I'm from in the 80s. I was born lefthanded but have been forcibly converted to being righthanded. This can lead to neurological problems like persistent stutters. I was lucky though.

My grandfather was born in the 40s and a lefty. He was forced to write with his right hand so much he ended up with terrible penmanship regardless of what hand he wrote with

Left handed is also more common in neurodivergent people, autism has higher rates of “not-right handedness” which includes left handedness and mixed handedness

Ah, yes, that makes sense.

Yup, here's a higher resolution image in case anyone wants one that's more readable.