Entirely valid if not entirely unforeseen
Compromise is not the only thing that's hard to reach. Productivity an quality can also suffer.
Any form of discussion that eliminates spontaneous interaction is inefficient, as fast feedback contributes a lot to clarity and relevance. Online, one person at a time gets to hold the floor.
As an extreme case of this, I contribute to standards development, the mechanism for which is isolated parties independently commenting on drafts, the accumulated comments being then filtered and summarised by editors. The results of this process are slow progress, mixed messages and inaccuracies. Elsewhere, I have participated in design meetings where ideas are interactively thrashed out, and these by comparison are efficient and effective.