Because that's not what baseball players do. It'd be like forcing a bear to hibernate for an extra 2 months. It's just not natural.
Bundy helping the Orioles this season is not the top priority, IMO. Bundy getting back on track developmentally and re-establishing himself as a potentially dominant pitcher matters a hundredfold more than him having a handful of starts in the 2015 pennant race. Handle him in whatever way you feel makes him most likely to have personal success this season, even if that's not optimizing him to potentially be able to help the MLB club.
There will be plenty of players at extended Spring Training prior to being sent to a full-season team.
Bundy getting on track developmentally is absolutely the number 1 priority. Having him begin his season now doesn't help or hurt in that regard. Him starting a month from now doesn't help or hurt in that regard.
If he started a month from now, it's not like the top Player Development types wouldn't be there guiding him then. So, it's not a matter of missed instruction.
Bundy potentially being available to help the O's in the 2nd half should not be counted on, but it is a potential wild card that exists for the O's in '15, and that potential would have been increased if you were beginning his season later.
Oh well.. I'll get over this. Mainly just want to see him back on a mound (Bowie) and having success. Agreed that is what is most important.