In a perfect world, Microsoft would have released Windows Phone before the Motorola Droid came out on Verizon, thus securing their spot as the alternative smartphone OS behind iOS. Unfortunately this did not happen, and so Microsoft has had to make very tough choices about their mobile future. They need users on their platform. The amount of money you and others like you bring in by being loyal Windows Phone customers does not offset the development costs of making the platform. In order to get more people they need apps. In order to get apps they need to make porting as simple as is humanly possible, which is what the bridge project is attempting to do. Merging mobile and desktop has also led to significant tweaks in the design language and of course if you were a huge fan of the old Metro, you wouldn't be happy. Like I said though, Microsoft isn't here for just you.
As to your last point Microsoft does care about their platform. They wouldn't be developing a universal app/OS strategy if they didn't care about the mobile market. Just because they're not doing things you specifically like doesn't mean they don't care.