Fuck that. I would use a flamethrower for that basement.
Spiders don't bother me but I have a crazy irrational fear of spider webs. They creep me the hell out. You can bet it took a LONG time to clean that up. Very long pole, high powered light, and shop vac. Slowly made my way inside and sweeped the area far ahead of me before inching forward. I eventually got the entire area done and installed permanent lighting, eventually got it spray foamed. (was a huge heat loss as that is under the unheated/uninsulated garage)
But yeah that is probably the most intensive spider webs I've ever seen. The dust makes it look worse, but in a way, I much rather be able to SEE them, then to run into them blindly. *shudder*