Every system is individual
I do not think that anybody knows how many different real-time applications there exist in the world, each of them with individual requirements and design solutions. So many times you may have to find a clever solution that makes your application work perfectly, and maybe that solution is totally useless in another application. So working with design and implementation of real-time applications is always a challenge, sometimes you can use old well tested solutions, sometimes you need to invent new ones.
The articles try to give you guidelines and recommendations on how you normally would solve a problem or use the functionality in an RTOS. But as every application is individual you may find that the recommended solution does not work for you, and you may have to do it differently. But hopefully the articles will give you some good ideas and inspiration on how different problems can be solved.