Having task updates in the comments feed looks very messy. Also, the way that updates are written does not make them easy to read.
I think it would be better if the task updates were removed from the comments feed.
Task updates could be moved to their own dedicated feed. However, since I personally don’t find them useful, I’d like to be able to hide them completely and only unhide them if I really need to see historical updates.
Agree with Bastien, I think it is very important to see what happened and when. Especially keeping in mind that some team members might not be that familiar with all Asana features and somebody might wonder why a task got moved, etc - this helps them also to see what exactly happened with a task and why.
Also you might be interested in upvoting this product feedback request thread:
This refers to just being able to hide rule activities