Loads of people skipped Mission Creek last year due to the trail being washed out, and I know this year will likely be the same.
If you are trying to decide to skip Mission Creek, I figured I'd upload the random pic and videos I happened to take during that stretch of trail, to show what the actual conditions look like from a PCT hiker's perspective.
I actually loved Mission Creek. It's the first section with flowing water, which felt cool against my skin. And I enjoyed the rippling sound of the creek. It's also one of the first areas where you are hiking at the bottom of a canyon, instead of up top.
Nav can be tricky without the trail to follow, as you want to make sure to stay on the correct path when the canyon forks. I did not find hiking on the rocks to be painful although I know many others who found it awful.
The washout has created a lot of slightly elevated, sandy areas which are suitable for camping. I found a flat sandy area with driftwood logs I used as a benches, and trees for shade.