For what it's worth...
For what it's worth... Everyone had the same reaction when Ford dropped a pair of cylinders and added turbos (2.7L & 3.5L). That whole experiment has seemed to work out ok for them. For the rational people that don't punch it at every stop sign/light and only really get into the boost when they need it the engines return impressive mileage and torque when needed.
also... see below.. looks like Subaru 2.4L takes regular gasoline
2019 Subaru Ascent
2.4 L, 4 cyl, Automatic (AV-S8), Turbo
Regular