I am not experienced with the frequency or relevance non-game developers/other artists use Devlogs, but like Kupotepo already pointed out I would expect the “New projects” and “Devlogs” tabs to do what you originally asked for.
When you say you get notifications, did you mean emails? Because you can disable those under “Account settings” -> “Email notifications”.
Other than that, you can click the little “Like event” button in the right upper corner of an announcement you liked. Or simply mark everything you’ve read in order to organize yourself. We won’t judge you… openly. ;)
I hope any of this was of help to you.