What @Elias_Gomez_Sainz posted above about hiding the revision history will work for you then. That is available in free bases as well.
Click on the “clock” icon next to “Share” and then on “Record revision history” as @Elias_Gomez_Sainz showed in the .gif — this does not delete the revision history, only hides it, leaving only the comments, which is exactly what you want.
I do this on all my bases as the default state. Then, on the rare occasions where I need to see who made a change and when, I go and re-enable the Revision history to see what I need, and then hide it again when I’m done. That works pretty well for me, and allows me to keep comments front and center as the default state of my activity feed.