The system won't lock them up for that, since it's not a violent crime.
Neither is smoking a joint....but how many people have been put in jail through the "War on Drugs"?
I actually use Firefox on Android, and it WILL run on older hardware. Many standard addons work as well. The biggest problem seems to be that a lot of mobile sites are coded with the assumption that the viewer is using Webkit, so on some sites I wind up having a better experience with the full site than the mobile one.
Like Slashdot? The mobile site is terrible...