By all means, the person can go ahead and do it. But would it be a wise choice? No.
Laser is most effective on dark (dark brown or black) and coarse hair. I’ve repeated that so many times on these forums but I’ve found people seem to have selective comprehension.
I saw your other thread and I think the idea is redundant. Hair that is not dark and coarse (like underarm or pubic hair) will have a limited response. Obviously there are other factors such as skin colour, Laser type, settings etc which will effect results. But in the best case scenario, the hair still needs to be dark and coarse; attempting Laser on other types of hair is a gamble and one I personally wouldn’t try.