I would agree that I don't know what "going nuclear" means in this context. I think it just means not buying stuff from wotc if you don't like they way they are conducting their business. Likewise, no one is who is so-criticizing wotc is able to make your "life's passion...fade into obscurity." That's equally hyperbolic.
In fact, the only things that will be 'fading into obscurity' will be those products that relied on the OGL. For example, my favorite OSR game, Whitehack 3e, has paused sales, and my other favorite game/company, Old School Essentials by Necrotic Gnome, has a much anticipated kickstarter in the works that is in jeopardy. Hopefully they'll figure out a way around the OGL. Nevertheless, you can remain blissfully unaware of the existence of these and many other 3pp and free to keep playing your official wotc-approved version of dnd, aka your "life's passion."