It not a good or bad idea at all, it's just pretty odd.
First off, by increasing the use of the knuckleball, does that mean they are encouraging players to expand their repertoire to include it? I doubt it, since I don't think the arm-action of normal pitchers is suitable for knuckleballs. It defeats the purpose to have a pitcher have a normal repertoire and then add a knuckleball to it.
Or do they mean that they are going to encourage pitchers to go dedicate themselves to the knuckleball? Well I don't see how that is going to work. There has to be a lot to happen before a young pitcher would resort to that. You would have to blow your arm or just become plain ineffective at pitching. And even then, you just don't become a knuckleballer. It takes years and years. Why would a young pitcher dedicate that much time when they still think they can be effective as a normal pitcher? I don't see any of the 18-27 year olds resorting to a knuckleball. Sure, if you're a 32 year old journeyman, by all means, but is it really worth the emphasis?
And a 3rd point - having more knuckleball pitchers means you will need competent catchers at all levels. Again, you can't just teach that. And what happens when you are a developing knuckleballer but you have someone with the talent level of JP catching you? Pretty discouraging.