We have had several schools convert to turf over the last couple of years. Only ONE has those marks, and I can’t understand why the others don’t. It should be standard, since it doesn’t cost any more.
In my business as an Architect, with the vast majority of our business being with schools, I know that the truth is that the plastic grass vendors don't care anything about following the requirements in the rules. They just want to sell the school what they think will look 'cool.' When we actually design a stadium, or are asked to provide a design for a new field at a stadium, then we have the ability to make the vendor provide the required markings, and NOT do things that are contrary to the rules (like having logos so large they interrupt yard lines). But, many schools just work directly with the vendors, and end up with all kinds of goofy markings. One field I know has the "restricted areas" marked solid white, as they are supposed to, but those solid white areas are only 3' wide (instead of 6'). So, we have even more heck keeping the coaches and players back. "We're off the white!" Sorry coach, just because the white marking is only 3' wide, the restricted area is still 6' wide. Get your hiney back there. Many fields don't have the required limit lines, so we have a hard time keeping photographers, end zone cameras, and other extraneous personnel/equipment at least 12' off the boundary lines. So, yeah, very few have the 4"x4" "big line" extensions 6' off the sideline. We see logos that span across 3 or 5 "big lines," which makes marking spots much harder in those areas, and makes measurements through those logos very, very problematic. They don't care. That 22 yard wide spider at mid-field just looks so cooooooool!