As another poster replied, there's conflicting information, so at best it's a statistical tie between multiple teams, and not a significant outlier. The other team has also managed to have an extremely high PDO for multiple seasons, far higher than the Canucks' PDO over that same period of time, which just shows that it is possible to have high PDO in consecutive years.
As for the shooting%, Tocchet famously has the team taking less shots, and specifically only shooting when there are screens or multiple screens in place. He's even said it himself in an interview, that he doesn't just want the team firing pucks for the sake of getting shots on net because the other team will just skate back the other way, which will lead to a higher S% naturally. The team's 5v5 S% this past season was 10.59%, which was the highest, but only by about half a percent, not like Boston's 103.6 PDO from 22-23.
The Canucks were also 6th in HDSF, and 23rd in LDSF (EDM, NJD, PIT, NYI, LAK) and 23rd in LDSF, indicating that the team did take less low danger shots, which would artificially raise their PDO due to less total shots. Among the previously named teams, LAK, PIT, and EDM were all top 10 in LDSF, indicating that those teams just threw the puck on net more often. The Oilers led the league in S/60, the Canucks were 26th.
I'm not denying that the Canucks will have a lower shooting percentage, I just think that a lot of that is overstated and the sky won't be falling.