Yes, dashboards are dead. Just like newspapers were dead back in 1997 ... except that they're still with us 25 years later.
I agree with Chris Hornberger, don't say it if it isn't true. More "click bait and subterfuge" we don't need. It wastes people's time and makes them want to mute you if it happens consistently.
What I had hoped for from this article was viable alternatives, but embedded analytics doesn't preclude embedding an interactive dashboard, etc. And how does reverse ETL replace a dashboard's status-at-a-glance capabilities? No actual suggestions and an admission that your thesis isn't really true. Fabulous.
I've built dashboards that changed the way companies worked. They were looked at constantly throughout the day. Maybe the dashboards you've seen just haven't been that good.