Is this correct?

[ooohlala]

'Less people are left-handed than people who are right-handed.'

Is this sentence grammatically sound or not and why?

[bhaisahab]

'Less people are left-handed than people who are right-handed.'

Is this sentence grammatically sound or not and why?

Well, it's a bit confused, don't you think? It's not ungrammatical but it is unclear.

[Nightmare85]

**Neither a teacher nor a native speaker.**

Why not:
Less people are left-handed than right-handed.


Cheers!

[SoothingDave]

Not a teacher.

"Fewer" should be used with countable items. "Less" with uncountable. I'd say "Fewer people are ..."

Remember: Less fat, fewer calories.