Not none, just very little, like the obscure code corner case. If you are thinking about building something nearby, or specifically looking for interesting terrain to visit, you may be misled. The pig shaped cow spot, on the other hand, adds accurate symbology to the decal, with a wholesome helping of self deprecation.

To allow de minimis excursions from ground truth is a necessary compromise, but purposely introducing them isn't.

I don't think the effect would be serious. I have plotted explorations of the wilderness off topo maps--and I always head out perfectly well knowing that the map isn't a sufficiently accurate representation of reality to actually trust it. The flatter the terrain on the map the more likely it will prove passable on the ground but features can be small enough to not show, yet make it impractical to get through.

Oh please.

Anyone looking to actually do something interesting with a piece of land is going to have to a much higher resolution map of the site, not use the extreme zoom and on a map covering a huge area.

Or they may even go rogue and visit the place! Heavens to Murgatroyd!