Thread: A sentence to translate

I have seen a sentence like this from a Russian. I have split the parts which I fail to translate. Would you split them the same way in English?

Чтобы принять участие в паралимпиаде, нужно быть инвалидом. Причем, нельзя просто так быть каким попало инвалидом.

"просто так" here is "without effort / simply".
"каким попало" is idiom close to "random". bride on wedding throws flower at group of maidens in random manner = "в кого попадёт". "who was hit?" = "в кого попало?". "каким попало" is some kind of reverse - life is "throwing random objects at you".
So, "(green) you cannot simply be (red) random disabled".

one cannot just be whichever invalid.
Or: it is not enough to be just an invalid.

But the russian sentence is clumsy. One should at least omit так.

Чтобы принять участие в паралимпиаде, нужно быть инвалидом. Причем, нельзя просто так быть каким попало инвалидом.

You ought to be a physically disabled person to take part in Paralympic Games.
More to that/what's more (причем), you can't just (просто так) be a person with any kind (каким попало) of disabilities.