They’ve had pressure for 2.5 years. They’ve certainly tried to fix the issue, but unsuccessfully so far. It would seem that the amount of add-ons being built for the sim grossly outnumbered even their most optimistic expectations and they just can’t keep up. Good for them (more $$$), but bad for us as end users.
You get a notification in game that tells you updates are available. Then you go manually update from your content manager.