From the video

Video: Ranking Every Week 6 Wide Receiver as a Start or Sit
Ladd McConkey last week was like technically active, didn't play at all. So, I'm going to assume he's still very much less than 100%... Ladd's definitely going to be in the shaky flex category.
Mentioned at 25:14 – 41:54Captured by STACKED 9 hr after posting

STACKED’s take

Negative signalRole

Shaky flex option returning from injury

Ladd McConkey is expected to return from injury after a limited practice, but he is placed in the 'shaky flex' category because he is likely less than 100% and faces a Chiefs defense that allows the fewest fantasy points to wide receivers.

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