I only use Firefox and for the exact reasons as you mentioned but I was asking why would anyone install peppper on Firefox as you suggested. I mean, you are trying (awfully) to lecture on me not this to be my problem but you did it by installing pepper not only your problem but make it the problem of everybody else.
Anyway, I read the thread again and I think we (including me) messed the thread. So I will try to clarify something about flash so everyone can get the stuff he/she needs:
FLASH NPAPI:
There are like two simultaneous branches that can be used in Linux: 11.2 and NOW 23. The difference is that 11.2 has old code and can have some hardware acceleration and DRM support (it will play stuff but not all) while 23 is a "renewed" code but without DRM support and not GPU acceleration. Both have security updates but 23 also has bugs updates and in the future it may have support for acceleration, DRM and others possible features. BOTH are available for 32 and 64 bits.
FLASH PPAPI
This is NPAPI "reversioned" made by Google and Adobe and its version is 23 and comes in Chrome as built in. No hardware acceleration and no DRM and its 64 bits only.
Now, everybody can decide which one is better for their needs or browser. So, to me, it doesn't seem to be a reason for a simple user to install pepper on their Firefox.