[Findecanor]

I don't agree with that comparison.

RyanAir is about exploiting consumers, with bait-and-switch and shitty terms and conditions.

RISC-V's modularity is about giving choice to hardware designers, so they can pick and choose just those features that their solution needs, and even allow for custom extensions.

RISC-V's modularity is for academia. 1) for education, where students learn/use/work on simple processors, 2) for research in new types of hardware and extensions, where ease of implementation or ease of creating a custom extension is important.

[LeFantome]

Extensiosn are not just for academia. If I am building a microcontroller to control the storage media I am selling (eg. hard drives), why do I need to implement a bunch of features I am not going to use? What about my flow rate monitor? Or my pacemaker?

In some of these, less silicon means less power means more better. Like that last example.