It is. By design MG/CoF are supposed to be important decisions about your gameplay style and are not supposed to be switched at will.
I won’t go too deep into that because it’s a divisive issue for some and @Kulze will start posting walls of text again 
But you do get an explanation of what each is supposed to be before joining, even if most players don’t read them.
As he said, with some smart usage it’s more than enough. The most important part is that you should think in reverse to what you might expect: namely, don’t use the filter to hide what you don’t want to see. Use the filter to hide everything and only show what you want to see.
Usually I have something like this (bottom to top, since rules read top to bottom in-game):
-Hide everything that isn’t a unique or legendary
-Hide idols
-Show T7 or 2xT6 items
-Show rare affixes for shattering
-Show health/health idols (since those tend to be good)
-Show idols with the affixes I need for my build
-Show exalted gear with affixes I want for slamming. One per gear slot.
-Show non-unique gear with the affixes I need for my build. I use two per gear slot, one that matches at least 2 affixes, one for 3 affixes.
And you don’t really need anything else. Right now I have 2 other rules (near the bottom):
-one to show bases to make fractured crowns
-one to show CoF ranked items (for runes of ascendance).
Now, you can achieve what I did in several ways (many probably even easier and more effective), but the general idea should be something like this. Most of my rules are around 30-35 rules at most.
You should check this post. It has a great explanation of filters as well.