Why People Are Doing This Now
VHS tapes do not last forever. The adhesive layer that holds the picture onto the tape absorbs moisture from the air and slowly breaks down, which is why old tapes squeal, shed and drop out. Most consumer tapes stay watchable for 10 to 30 years, and decay speeds up rather than leveling off.
The other half of the problem is the machine. VCR production ended in 2016. Working players are getting harder to find, and a worn one can damage a fragile tape in a single pass. Waiting costs quality that cannot be recovered later.