As an structural engineer and former Autodesk user, I completely agree with the letter. I always saw Autodesk as a company where software goes to die a slowly painful death.
It started with Autodesk Structural Detaling. They bought the software from a small company, renamed the product... and that was it. It had the same bugs release after release... we as customers tried our best to report the bugs, but nobody listened.
We stopped using ASD and moved to Graitec Advance Steel and Advance Concrete, for a couple of years everything was great, quick support, remote sessions in case you struggled with something, new features, bugs fixed... and then... Autodesk bought it. I still remember the morning when I read the news... I was horrified. I remember talking with some guys at Graitec and they were shocked also.
After this... was Autodesk Structural Detailing story all over again. Just a product rename... and that was it. No more bug fixing.. no more new features.. they killed Advance Concrete in favor of Revit (which is one of the dumbest thing ever... because Revit was years behind Advance Concrete as a concrete detailing sw).
For concrete detailing we switched to Allplan. I think Allplan and Graphisoft's Arhicad have a bright future together.