They could also just be a high schooler taking advice from BJJ people and asking for other opinions.
However the bolded part is a good question - what is OP trying to get out of wrestling? Forget what it's called, forget what some "let me lie down to fight while I insult every combat sport except my own" jabroni said - what do you want from wrestling, OP? If it's "self defense" then absolutely, unequivocally, without a doubt wrestling helps you. Is it the only thing that helps you, or even the best thing, I'd say no. But if you learn to wrestle AND learn how to strike AND learn how to disarm someone then you will be a powerful force if the need ever arises (also remember "Avoiding Fights" is a crucial skill as well).
I truly can't imagine needing to defend myself and choosing to lie down. BJJ is weird.