Retention is still needed cus Boeser is maybe worth half his AAV.
If Björkstrand got a 3rd + 4th, and Patches went for future considerations, both superior wingers to Boeser, I see no reason for why Boeser should return anything higher than a 5th rd pick.

Because Vegas and Columbus were forced to move those players because they were over the cap after acquiring eichel and gaudreau. There is nothing forcing Vancouver to move Boesser, so a team will have to offer something of value to aquire him

50-60p players are paid more than 3.3mil dawg.

First off, it's not really so that the Canucks are swimming in cap space.
It's been heavily reported that the Canucks are looking to move Boeser's cap without expecting much of value coming back to them, why else would they allow Boeser's agent / representation to reach out to other teams asking how he'd fit into their rosters.

Boeser is (and always has) produced at a decent rate, but he is still getting heavily outscored, outchanced and outshot at 5v5.
The Canucks are paying a very heavy price for the points Boeser is putting up, and I don't mean that in terms of cap hit but in that Boeser is responsible for giving up more goals against than he facilitates for the Canucks.
The question really isn't whether Boeser's overall game (good and bad) is worth half his cap hit, it's whether he is worth anything it all, let alone a 2nd and and NHL ready RHD in Walsh.

The fact that Boesser is getting out chanced and outscored shouldn’t be an indictment of his play. It’s a result of his environment. Everyone on the team not named Petterson is also being outchanced.

Well, isn't Boeser part of that environment?
Is he the only player on the Canucks not accountable for giving up more goals, chances and shots against?

Of all Canucks players getting at least 400 minutes of ice time at 5v5 this season:
Boeser ranks 5th last in GF% at 44.6
Boeser ranks tied for last (with Lazar) in xGF% at 43.3, that's 2.5 percentage points lower than the Canucks average.
A bottom 5 team in the NHL are getting overall actively worse when Boeser steps onto the ice, that's a damning indictment of his level of play this season.
I get that Boeser's key assets relates to scoring and production, but for 6.65m AAV the results he puts up in the above metrics are wholly unacceptable.

Boeser is also below 50% in both Corsi and Fenwick differentials fwiw.