A couple of hours tracking the Dead Wax is very common, there are plenty of late night naps that are close to this time period, not all are known to cause damage, but serial nappers do use devices to lift the arm wnen in the Dead Wax.
The arm lifter may be the ideal device for other activities that can create extended Dead Wax Periods for the Styli as well.
In the days of old, when I was Tantric Guru, the Styli used be left to ride the Dead Wax for a few days at a time 😁