I have failed many times to convince IoC pugs to take vehicles to defend glaives or assault Hangar instead of taking them to a wall. In their mind, like you said, vehicle = wall even if that means a single turret takes them out and the wall takes no damage.
The impact a group or two that are willing to listen and/or think about what they’re doing can have, is insane. The difference between a team that takes WS and mindlessly throws vehicles into a gate vs a team that takes vehicles to protect Glaives or re-take Hangar is game-winning.
It’s not that surprising that people who don’t participate in premades think that they’re comprised of NBA-like all-stars who have taken the weekend off of AWC finals to stomp some pubs. That isn’t the reality at all but I can understand how people think that when the difference between minor strategy adjustments can have such enormous impact.