This line from the linked post is a great summary of exactly how I think Dropbox's product direction has taken a turn for the worse.
This is no sleight against the author (who seems to be doing great work; I enjoyed this read!) or the engineering team. Just like, the general direction of the company. This line also stands out:
> it had been a while since we delivered new value to our personal users.
I can't speak for all paying users, but the value I derive from Dropbox is how it syncs fast and "just works". I do _not_ find new value in popups and notification badges about features that other companies have already perfected (much like I don't need to go anywhere else for file syncing).
I realize I'm not representative of the userbase as a whole, I'm just frustrated.