Mobile operating systems don't have performance and resource counters for every process because they would provide too much overhead and they are trying to squeeze out every extra milisecond of battery life that they possibly can, They need to keep memory usage and processor time to a minimum, not only because they are limited in size, but also because using them draws battery power as well.
Also consider that most smart phone operating systems didn't have full multitasking capabilities until recently. There was no reason to track process CPU or memory usage because they pretty much had all of the processor time, available memory and network I/O exclusively while they were running.
We must always remember that a smartphone is not a computer. It shouldn't have a console and advanced system diagnostic tools. The system shouldn't need to monitor and report process resource usage. Why? Because a smart phone shouldn't be running that many background processes in the first place!
Desktop computers have magnetic hard disks which they can use for storing files and inactive memory pages. They have large amounts of memory for caching and buffers. They can constantly run many pieces of hardware without worrying as much about battery life and space in a tiny form factor.
I can understand that maybe you do need to have so many different applications running in the background to poll for facebook updates and whatever else. If that is the case then the OS vendor should look at developing a common interface which unifies and better controls them. For example, instead of having processes constantly running and opening TCP/IP connections to various servers to check for updates, Apple decided to implement push notifications.
If it's such a badly written application, it shouldn't be published in the app store. It should be available under a separate repository, or require manual installation. That way only people who want to hack around their phones will be able to install them. It should definately not be up to the average user to start worrying about things like that.