A user clicking on a link takes the user away from the platform. If your goal is to maximise time spent on your platform, you'd be incentivised to suppress links as much as you can. That appears to be what's happening on X.
Yes, that's what I'm saying. That "engagement" on Twitter isn't coming back, unless ownership changes the product to allow it. Bsky isn't going to grow out of this. Engagement is going where it's rewarded, and that's all there is to it.