I think he'll start very strong, and just like Remco in 2021, he won't be able to keep up that level for 3 weeks, and will lose minutes in the last week and will finish top 5.
It could be the case if his base is not enough because Primoz is quick to reach racing form but any flaws in preparations will be evident in the second half of the race. I still think (or hope?) he has time to get enough training volume for the Giro.