Only a fraction of companies can ever really outgrow the capabilities of a fully tuned RDMS. And only a fraction of those will choose HBase over its competitors. And so only people who have worked for such companies have any real experience with the product... and only a fraction of those are vocal about it on the internet.
I agree with what you say, but I think we also need to consider cost as well as capability of the underlying product.
Introducing cost massively changes how that equation stacks up.
"How many tps can I run given a budget in the form of these 6 available servers". Well the boxes are under spec for what you want to achieve with an RDBMS, but yeah no problem with XXX nosql product.
