[raverbashing]

Here's the problem:

Some developers will say a (data structure) Controller is a class obeying the SRP

Some others will say the class can manage itself and not need a controller, so M and C can be one thing.

Some other will argue that it's better to make 2 controllers, one for complicated thing 1 and another for complicated thing 2, all based on the same Model.

[d110af5ccf]

That's not a problem, it just means the set of design tradeoffs to consider when solving the problem is nontrivial.

The principle draws focus to certain (arguably important) design aspects. Multiple possible approaches are identified. Various concerns are raised in response. A good solution needs to balance these concerns against one another in context.

The principle is just one of many cognitive tools to employ when thinking about the problem.