Each channel requires a different approach. Take a platform like Facebook. Readers expect a certain tone from your content. And they want to see images, videos, click-throughs to elsewhere. Completely different from a blog. You can't do that from one source document. Serve your readers per platform with the maximum user experience that is desired and possible there. You'll lose them with uniformity.
The arguments examined more closely
You would think there is no room for disagreement. Why are COPE supporters so stubborn? I will briefly go through three frequently heard arguments.
COPE is completemaking choices. This discussion is particularly relevant in responsive design. Do you want your entire website to be available on smartphones? Or do you consider which information and services someone uses on their mobile and make choices based on that? COPE fans find it patronizing to choose for the user and want to offer all information in all places.
That argument seems user-friendly, but it isn't. Because we have always had specific expressions for specific latvia phone number list moments of use. The user asks for that himself. If he wanted to take a dictionary with him on holiday, he chose a mini-thing for in his trouser pocket. Handy. And of course he realised that there was less in it than in the thick book at home. But he found the ease of use more important, quickly finding the most important things.
Likewise, today's smartphone user wants to quickly find the most frequently used information on a bike. It will probably happen that you are looking for something that you just can't find on a mobile website or app. Then you really have to go to the entire site. But you are happy to do that for the better accessibility of that most requested information. You didn't take an encyclopedia on holiday in the past either.
COPE is manageable
For control freaks, it is a wet dream to be able to oversee and control all communication of the organization from one source. But then they forget that centralization is deadly for initiatives. It becomes such a hassle for colleagues to deliver content and put it in the right format that they just leave it. No more current signaling and spontaneous reporting. If manageability is your argument, realize that you are busy extinguishing energy. That has negative consequences for the power and reach of your messages. A big sacrifice for your ideal of manageability. Throwing the baby out with the bathwater, we call that.