OK, I read through these, a couple of points:

- Create Power BI reports in the browser. It's true, in Report Server, you can't create reports in the browser. You create them in PBI desktop, and then someone with sufficient rights can deploy to the server

- Dashboards - this is just damn misleading. In the PBI Service, there is a a feature where you can select components from existing PBI pages and construct your own "electronic bulletin board". But you're not authoring any specific visuals.

bottom line, you can create the same kind of visual output across pages using either one. This is a case of the Microsoft marketing people usurping a term, and I hate when they do it (now that I'm out of the MVP program, I can be a little more candid)

- Automatic page refresh for DirectQuery models.......that is true, though to be honest, I've used PBI report server since 2018 and have not had a need for it at all.

- Full-screen mode - that is really B.S. All you have to do is take the URL of a deployed PBI report, and slap a "rs:Command=Render&rc:Toolbar=false" and you get a very similar full screen effect

- Many-to-many relationships - you can do this in PBI desktop and then deploy the report...having said that, you want to be careful with that kind of relationship

Cross-report drillthrough: out of the box, that's true but misleading. There is no native support for it in PBI report server, but there are people who have found workarounds.

Like I said, that list is misleading.
Now, here is my biggest frustration with PBI report server.
They are about to release the May 2021 version of the report server (they release it three times a year)
That will *probably* include all the visualization/authoring features they added through the April service....but no 100% guarantee. And you might have to wait another 4 months. I wish they'd release the PBI server six times a year instead of three...it's obvious they want people to move to the cloud.

That has been my only frustration with PBI report server - having to wait 3-4 months to support new features they they support right away in the service. Aside from that, I've been able to author the same kind of report content - and hopefully you can see from the one sample dashboard I deployed (the COVID one) that I don't merely "dabble" in this area. Everything in that entire set of pages, could have been done on PBI report server.