I think with the freezer thing, he's talking about the Raw Denim trend. http://www.rawrdenim.com/2011/09/the-essential-raw-denim-breakdown-our-100th-article/ It's basically when you don't wash your jeans (or about 1-2 times a year) so that they fade progressively and they become "yours". The knees are worn out exactly where your knees are. Not somewhere down the middle of your leg like with pre-faded jeans. Careful to buy Raw denim (not pre-washed) if you plan to do that. Otherwise, you're just wasting your time and waring dirty jeans. About the freezer thing, it's not really necessary in my opinion. Maybe it speeds things up but in my experience, leave then out to breathe outside for a day or two and they should be fresh again. And shower every day you wear the jeans/ wear clean underwear. I guess it goes without saying that if you don't, the jean will start to stink. And it's overall just bad hygiene to wear dirty underwear.
I've done all types of washing for my raw denim. The problem with the freezing of jeans is that it doesn't actually clean off any of the dirt which is still going to break down your jeans. So even if I freeze them to kill bacteria I still had to spot wash them. I've ended up either hand washing my raw denim in the bathtub with a little bit of soap and hang drying or if I'm being lazy I'll put then in the washer by themselves on a delicate cycle and then hang dry. I only do that like once every 6 months. I want the fade to come from me not the wash. I've been doing this for awhile and this article is the best I've seen on it. https://www.washingtonalley.com/blogs/raw-denim/the-10-things-to-know-about-raw-denim-before-purchasing
Ooh interesting. I've usually held on to a pair of jeans for a year or two until I grow out of them, but now that I don't really grow anymore I'll see how long I can make them last. I've noticed with the jeans I've bought that the buttons on the fly eventually create a circular fade around the 'cover' bit over them. It creates a very, very weird situation. Then again I was wearing $35 Hollister jeans, then again they actually felt like really good quality jeans, durable comfortable and warm. I wonder if that happens with all jeans when they're washed and I should start freezing my jeans, or those were just shitty pairs.