In fairness although "the industry" learns best practices like using SQL prepared statements, not sanitising via blacklists, CSFR, etc. there's a constant new stream of new programmers who just never heard of these things. It doesn't help that often when these things are realised the only way we prevent it in future is by talking about it, which doesn't work for newbies. Nobody goes and fixes SQL APIs so that you can only pass compile-time constant strings as the statement or whatever. Newbies just have to magically know to do that.