I don't guess there exists a similar thread of people talking about the OGL.
Not exactly - but the fact that Paizo supports the OGL gets frequent mention. Ditto for OSRIC et ali.
That said, it's amazing what we've seen in the time of Pathfinder. Not just the renaming of one version of D&D, and it's continued widespread popularity, but the rise of other non-D&D rpgs (Cortex and Dragon Age being my personal favorites). The D&D brand name is no longer monopolozing the tabletop rpg market.
Though the two leaders are still either D&D or a variant thereon.
Certainly, this announcement was a turning point in the rpg industry.
That it was.
While there were naysayers predicting Doom 'n' Gloom
(TM) there were also more reasoned voices. There were also folks in Paizo's corners, giving the kid a quick rub with a a dry towel, a drink of water, and handing him his mouth guard before he entered the ring, fighting! *DING*
It was interesting to see how early the edition war entered into the thread. I do wonder how many of the posters ended up switching sides, one way or another. My suspicion is 'not all that many' - that people on both sides had already started digging trenches. The folks with low post counts being the PBI trying to charge the Maxim guns.
Though some of the more ardent naysayers and enthusiastic farmboys may have been left hanging on the old barb wire the war continues, and the low post counts are still leading the charges.... (In my head the Edition War is a bit like some of the theaters in WWI - lots of fury, huge explosions, poisonous fumes, lots of injury, death, and despair, but not a whole lot of ground being taken....)
The painful part for me was seeing the enthusiasm for Necromancer providing 4e support. Like seeing a monument to the pals regiments, where the lads of an entire town had died in the trenches.

(I need a new metaphor, this one is depressing the heck out of me.)
*EDIT* Replaced lyrics with video...
The Green Fields of France
By Eric Bogle (and performed by the Dropkick Murphys)
[ame=http://www.youtube.com/watch?v=ZrQnnZJ68Xo]The Green Fields of France[/ame]
Dedicated to all the fallen Edition Warriors....
The Auld Grump, yeah, that's the way my brain works....