As much as I fly, I've seen some weird shit. This isn't really all that weird. What was that NFL player name that performed knee ups up and down the aisle the entire flight that his teammates were on and trying to sleep?
Compression socks are good for long hauls, but at the end of a 30 hour flight they are going to be giving you horrendous itching. Because of the way they dry your skin out by squishing the edema out. (you know... which is what they are supposed to do) I see people post flights scrubbing their shoes on top of their feet and up and down their legs constantly while going through immigration and waiting on their checked bags. I never use them, but anything over 20 hours is terrible from what I see. Using graduated compression socks or rubbing lotion/moisterizer/Gold Bond on your legs prior to putting them on can help a little.