This is a poll of registered voters, not likely voters, and is therefore trash.
Translation: "It's trash because I don't like it."
It's a bit early for LV polls since there are 5 months left. That said, polling has been flawed in recent cycles and underestimated GOP support, especially in states like WI, so I'm not saying Evers is a shoe-in for reelection. It's a tossup.
Do you not see this being a problem with engagement being far higher for R’s than D’s? You gov had the generic ballot being consistently D +2-3 and now that they started screening for likely voters it’s R+4