Unfortunately you are correct. AMD has been advised of these realities by numerous sources. When the decision was made to not provide an upgrade path from Vishera it probably seemed like a reasonable idea in that Kaveri brings a lot to the table for mainstream PC consumers. Most PC enthusiasts however buy discrete CPU/GPU hardware for a very good reason - they can get exactly what they desire on both fronts - not what someone else thinks they should want or buy.
AMD is in pretty rough shape between years of mismanagement and now the complete re-organization of the company. The financial cost for these issues has been extreme and AMD has not only lost billions in sales annually they have lost the confidence of the marketplace and many industry partners. Kaveri has helped rebuild some of those relations because it's a giant leap forward for the industry, thus it means more revenue for all involved.
Unfortunately AM3+ has been essentially abandoned in the process for a variety of reasons, none of which would pass mustard in a well run company however. AMD could easily deliver a 28nm Steamroller socket AM3+ CPU and generate good profit from it but the mentality is that PC enthusiasts will flock to Kaveri because it's AMD's future.
I don't believe for a minute that the majority of current AMD based PC enthusiasts are going to toss their AM3+ hardware and buy an FM2+ system because AMD refuses to deliver a proper upgrade path for Vishera. I believe AMD is simply going to lose customers to Intel. AMD won't even notice however as Kaveri sales will be a big boost for them based on mediocre sales for the past 3-5 years. In the end AMD and it's customer base both lose as Kaveri is not what the typical PC enthusiasts wants or will buy.
Building a reliable PC involves more than just assembling the parts. You need to be able to configure all of the BIOS settings appropriately. This can be quite involved and frustrating as it can require a lot of trial and error with stress testing. It is however often the only means to get a 100% reliable PC.