Strongly disagree. Many people convey and express their thoughts and emotions through imagery rather than words. This allows certain people to still be apart of the community, while having to communicate through words would instead isolate them. I am one of those people.
That said I do wish there was an option to post text with a drawing. However, if given the choice between one or the other, I will draw something almost every time. That's simply the way I like to communicate.
Everyone interacting the same specific way without distinction between one another is what would defeat the purpose of Miiverse. The variety of posts should be a reflection of the different personalities that congregate there. Experiences and tips are simply not enough.