The change to a passive, non-aggressive approach in the org's advertising techniques is a deliberate legal strategy.
The org is a legalistic organization that plays in the international theater, using their religious freedom banner to challenge and change laws. And, when need arises, they change their behavior to conform to legal standards in certain countries, often making changes worldwide to give plausibility to whatever legal conditions exist in countries they are trying to infiltrate.
Evangelizing and proselytizing are under intense restrictions in many countries and the org has bent to those requirements. Witnessing techniques in the "free" world are being adapted to conform to restrictive countries' standards.
The org has legal battles on the international stage. The cart witnessing strategy is just one of their rabbits in the hat.