To anyone watching this show now why is the scoring different? I don't understand bowling originally is not that hard to score. Why do they feel the need to change it? Just curious on what people think.

I don't really mind the newer scoring system, so long as it doesn't usurp the traditional method. I'm all for innovative and progression in the sport, and the WBT scoring is kind of fun and more intuitive; however, I think the usual system is just objectively better for professional and amateur competition.
I could just feel the super-traditionalist bowling fan cringe and fume over Barrett's 300. While WBT scoring sort of cheapens the perfect game, I think Barrett would've thrown a 300 if there were 12 shots necessary. He was locked in and had a perfect reaction.
One concession: if WBT scoring helps bowling get into the Olympics, I will support it wholeheartedly in that style of competition. I think the sport's international appeal proves that bowling deserves to be included in the Olympics, and if for some reason, WBT scoring makes a strong push for its inclusion, we should suck it up and get behind it.

This new scoring makes me want to pull out the "R" word from retirement because it's pretty "R". Changing the scoring system isn't going to make bowling more fun, more interesting, or even put more people on the lanes. This just seems like a unnecessary gimmick that ultimately dumbs down the sport by making the scoring "easier" (as if it's really that hard to figure out as is).

The only thing I don't like about the scoring system is the devaluing of the 10th frame.  Why couldn't they simply reduce the value of a strike to 25 and award extra balls in the tenth for spares and strikes the same way they do under traditional scoring.  Then it would still take 12 strikes to throw 300.  Two strikes and 9 would be worth 59 in the tenth.  9 spare and strike would be worth 44.  Making the tenth frame more important rather than less important would seem to be a good thing for excitement.  Frames 1 thru 9 would be the same as on the show except for the reduction in value of a strike from 30 to 25.

As an old timer I really don't see a big benefit in changing, but if they did it seems like the simplicity could be achieved with less damage to the structure of scoring.  My proposal would also inflate scoring under some scenarios, but not as bad as the one used last week

I believe that this is the best of both worlds so to speak. It still keeps scoring easy enough for non bowlers and keeps 12 shots.

I don't think the intent was to speed up the game, but rather to simplify the scoring for those who don't understand scoring.