is 4th class climbing considered a lead? e.g. Kermit, Tiburcio's X Backside
how 'bout onsight solos of boulder problems - e.g. routes on bouldering rock?
Your question doesn't have one, single answer.
I think this is a question of style, and one that matters only to those of us OCD/meticulous enough to keep track of such things as the number of routes we've done in good style. I'll offer two thoughts of my own on the subject:
1. Those older class two, three and four routes are in the current guidebook for two reasons. First, they've been in a continuous series of Pinnacles guidebooks as routes from the start of Pinnacles guidebooks. I think the historical continuity is cool (they wouldn't be in a guidebook if they had been first climbed in the last 30 or so years). Second, most (but not all) of these "non-fifth class" routes go to the top of independent pinnacles, which provides just a little more justification for listing them as "routes."
2. For what it's worth, my personal style is to mark off as a "lead" any listed route that I have done not-on-toprope (I use the same method regarding the High Sierra where I mark off as a "climbed route" anything listed as a route in the guidebook, from class one to 5.10). For the specific Pinns "route," Bouldering Rock, I spent about two hours bouldering every iteration of it I could find, from fourth class to easy 5.11 and then claimed I'd "done" the route.
