It's not necessarily calling srand multiple times, it's beginners repeatedly calling srand with time(0) and making a "rand isn't random" thread on gamedev:

for ( int i = 1; i <= 10; i=i+1 )
{
    srand( time(0) );
    int val = rand()%10 + 1;
    cout << val << endl;
}

It's not necessarily calling srand multiple times, beginners repeatedly calling srand with time(0) and making a "rand isn't random" thread on gamedev:

for ( int i = 1; i <= 10; i=i+1 )
{
    srand( time(0) );
    cout << rand() % 10 << endl;
}