> Make our infra as difficult as possible for these modern SUVs and trucks and suddenly the office workers commuting from age Styx will decrease
While personally attractive to me, this is a losing proposition. Lots of people have (unfortunately) locked in usage of these vehicles; and will vote out any changes to car-centric infrastructure.
In my opinion, a better and more practical way to do it is:
First, clamp down on the manufacturers with regulations. Set super low speed limits for these things -- safety and road damage are obvious rationales. No truck should be able to go above 60 mph; that alone will make them much more unattractive.
Second, increase registration taxes slowly every year on these large vehicles, to reflect the increasing burden that they pose to society. That will go the rest of the way towards making sure carmakers turn their focus back to smaller, more sustainable cars.
A massive rework of our infrastructure is attractive, but not necessary.