I was one of the people who thought the record stood because the (9ball) pros couldn't break it. And I stand by it. Schmidt needed many, many tries and dedication over a long period of time and he is in the top tier of straight pool players. Other people have tried, this isn't the first attempts at it, though it's one of the first PUBLIC attempts. Very advanced straight pool players like Hohman, Feijen and earlier players have life time high runs around the 400 mark. As we all have seen, even the shotmaking machine Shaw is having problems getting to 400. Schmidt was raining 400's for a while before he broke the record, even Shaw, as awesome as he is, is not at that level at the moment.
Is the record breakable? Absolutely. Can people relatively new to 14.1 blast their way past it on pure shotmaking talent? Doubt it very much. At the very least they would need an extremely long period of time, at which time they'd be experienced players.
I'm not going to harp on about why, as I've said it many times before, only that it will take a very different approach than what we've seen so far (apart from maybe Ruslan). If I'm proven wrong, I'll happily admit to it.