jandamaschke I know very well what I'm talking about, don't assume somebody it's ignorant just because he does not agree with you.
1. Which is essentially a wrapper of the existing OWA. Like Teams is to his web app (that's Electron ok, but soon it will be WebView2, hopefully).
2. It indeed has, but it's a joke compared to what Outlook can do while offline
3. If an Enterprise customer is concerned about data at rest security the answer is BitLocker, but who am I to tell? Server side inbox rules are not a feature of the client but rather Exchange.
4. I'm sorry but here you are clearly out of your waters. AIP is part of MIP, is not being superseded. The client has been put into maintenance mode but there are still wide gaps (right click support for Explorer, advanced policies, scanner to name the first that comes to mind but there are more). Maintenance mode does not mean dead. Please take a look yourself: Announcing AIP unified labeling client maintenance mode and sunset of mobile viewer - Microsoft Tech Community
5. I concur with you with that. But requirements vary upon industry and not everything because it's in cloud is just better. Some time it is, some time it's not. The same with applications.
6. I encourage you to go and take a look at the "what's new" for the products you listed. They are alive and well. Again, this depends on the industry you are working in.
Cloud is definitely the way to go and from an enterprise perspective M365 is the most enterprise ready environment you can get with far more security and features than the current on-premises products have and the gap will continue to grow
I agree 100% on this, but still it depends. Sooner or later the market will find a balance.
I also find that young system administrators who only work on SaaS products does not grasps some of the complexities behind and I'm not sure how this will translate in the long run. Also debugging of some issues is much more complex since you don't have as many control over the technology.
I get the feeling you consider me a dinosaur or that I lived in a cave for the last 10 years, ignoring how the IT landscape changed. I'm sorry to disappoint but most of my consulting work is around M365.
Criticizing Microsoft because too often these days it's sputtering half-baked products or services and selling them as magical innovations I still think it's withing my rights, as well stating that there are circumstances where the on-premises counterpart still have a role. It's not blasphemy.