What ISO were these outdoor crowd shots taken at?ISO 100.
Photographically (is there such a word!) no matter what camera I was using I wouldn’t have used 100 for that type of picture, what’s the advantage?
In the case of Canon's stripey noise, when practical, one of the work-arounds to reducing the pattern noise is
to use higher ISO. Then the greater incidence of random noise can be used to obscure FPN to some extent and NR software can actually do a decent job of recovery.
No, not what you want to hear but that's a method I used sometimes while I had my PoS 5d2.
But,if you look at the DR curves for Canon's sensors, you'll see that total DR is pretty flat from 100 to 800+ on most models and only the SNR drops.
The real solution, other than waiting for Canon to improve their sensor tech, is to change or add other gear to your kit.
I've spent a pile on Nikon and Pentax and have nuthin to gripe about now unless I go back and look at the lousy raw files from my 5d2, 7d or occasionally my 60d.
You're also wasting your efforts trying to convince any of the fanboys here that they should expect more from their Canon gear; they're content to learn to live with the limitations.
Some of us expect better and hope Canon will deliver, they still do make enjoyable gear to use and great lenses..(for the most part)
6D and now the 70D are on track for improving IQ in these areas. The future may be better.