Right. But none of this says that terrain has to be range 1 apart. If it did, two barricades couldn't touch to make a longer barricade. You either mutually agree, you trust the TO, or you can place using R1.
I really don't see why this is confusing. This is only an issue if you assume crappy intent and place competitively from the start when not at a tournament. I would personally expect that most tables would have terrain within R1 of each other.









