It's also hard for a section hiker to be a purist, or at least you must be conscientious of certain things. I'm sure I ended some section hikes at road crossings and subsequently when hiking the section on the other side of the road, I may have failed to hike across the road itself. Oh, the horror of it all!
If I was thru-hiking, I wouldn't; I'd forfeit my purist status in Vermont where the trail crosses Rt. 4 - I'd take the old AT, now a blue-blaze, straight down the ridge to the crest of Sherbourne Pass and stop at the Inn at the Long Trail. The AT never should have been re-routed and I'm still not sure why it was. It couldn't have been a landowner issue because the blue-blaze is there.