It costs money to add those lights. Money that comes straight off profits. So I'm also guessing that truck is wider than 80". Maybe it's another step in the "mine is bigger than yours" race that seems to obsess the pickup truck market. If the stock trim Tundra is that wide ... it could force all of the lemming-like manufacturers into going wide. A new round of puffery that makes the Tacoma more attractive in comparison. Maybe Toyota is taking the long view on their bread-and-butter truck. That would be hilarious.
It's a cost, sure, but not a tremendous one. If you look at aftermarket grilles, it's not like you can see a real price difference between grilles and marker light grilles.
But I completely agree that going wider is a popular trend, one that I like personally. Regular F150s just look too skinny to me now. Wider just looks more aggressive. More so than lifts IMO.
Agree on all counts. That's part of why I think the whole idea here that "Toyota stole the Raptor's lighting design" is misleading. Trucks have had marker lights for decades on top of the cab. The Raptor was innovative in putting the 3 center lights in the grill. So the Raptor doesn't own marker lights. The Raptor owns "marker lights in the grill." But even then, the case is that Ford found a great way to meet that DOT requirement. If you've got to meet the same DOT requirement for a different truck today, you'd be an idiot to not use the great way that Ford figured out 10 years ago.
Toyota isn't a teenager putting marker lights on their Taco's grill. They've most likely got a DOT requirement to meet, and Ford made the new industry standard way of doing it for a half ton truck, so Toyota is following suit just like Ram did.
When my son (teenager) wanted a new grille on his truck, my two requirements were that he kept the front camera and no marker lights. I've sort of regret that marker light rule. It is a teenager's vehicle afterall, so do what he wants.
But regarding theft of ideas, it's not like Ford has all original ideas either. They certainly were not the first to use LED strip lighting in the headlights, infotainment screens etc. In fact, it's pretty surprise that more good design elements aren't copied more frequently.