From the episode

I think he had his spike week in week three against Denver. So you've already seen him. I believe Puka was out that game and he was playing pretty much full snaps. So I think that he's the logical guy that comes in and takes over for Adams and starts seeing some extra targets.

STACKED’s take

Positive signalRole

Johnston positioned to absorb Adams' targets with full-snap upside.

Johnston had his spike week in week three against Denver playing pretty much full snaps with Puka Nakua out; the source identifies him as the logical guy to take over for Devante Adams and start seeing extra targets following Adams' injury.

Quentin Johnston headshotQuentin JohnstonWR · LACPlayer page — value, ADP, projections, and every insight