All of the architectures you mention were targeted at high performance systems, not embedded systems. RISCV is the opposite. It is simple enough to implement yourself. Despite this, code density is comparable or better then existing options. This is a major design feat and not to be dismissed by calling this an obsession.

Especially because code density ends up limiting the speed one can get out of a design, given a memory bandwidth bottleneck. So one might expect RISCV to outpace all other architectures once a neat set of extensions has been worked out. Indeed that needs a frustrating bit of time.

However, you do sound like a self-righteous OpenSource "customer" who can only spitefully complain about a product that he didn't lift a finger to help deliver. That of course describes wrong doing, only somewhat understandable because we similarly inherited a world to live in, comparable to that open source product, and it isn't up to standard, if ever, and democracy doesn't allow us to make the changes we would like, to make it less of a bitch.