I could pretty much guarantee, If I sat in my truck, and pressed the brake pedal "hard" for a 24 hour period.. it would end up on the floor. That "process" was con-notated over years, to be done for a short period of time (a couple hours), to force air bubbles to congregate into one big bubble, to be bled from the system. Not as a continuous and repeated long period method for "ridding" anything, just a short period, and done. A simple "method" has been construed as a well documented issue in this case, where over use, and a lack of caution, turns into something that does not work.
If you were not getting air bubbles after all that tying of the lever, it does show you just applied enough pressure, to overcome the seal's capacity for sealing the fluid pressurized internally, nothing more.