On point no.1 - Yes. We run HANA as an analytical Database. A third of the memory is used for DATA. The other two thirds are not enough to run the complex queries and models computations. Despite doing HANA best practice and performance tuning it to the max. It just falls short of the sales hype. Period. The memory management in HANA is not good.
2.) Yes, HANA needs people to administer it. You cant leave it on its own. Lots of tuning and troubleshooting.
3.) Yes. It runs on Linux. Always have, always will. BUT There was never any claim that it runs on any platform. They claimed that HANA is a platform though. Which it is, kind of.
4.) Yes, its too expensive, SAP needs to charge you for the data you store on HANA. Not the full memory size. At least then if you need more computing power to run complex models, you can just buy more memory, instead of forking out MORE license cost.
5.) It needs lots and lots of memory, and CPU. yes. Bit exaggerated statement though about more than the entire customers landscape. Depends on what they had though I guess.
6.) It does. You still need good DB's in the cloud. You can still install it on Azure for instance. If SAP can work on the licensing, they could save HANA. But the 50% split of memory for data and computing is a false claim. They need to allow customers to add more memory without penalizing them on licenses.
Finally point no.7. Yes they are forcing customers to go HANA anyway. Not sure if they can go DB agnostic again....?