He is saying...
More line requires bigger spool to hold it.
Bigger spool = Bigger reel
Bigger reel = Heavier reel
Heavier reel = Sore arm
Sore arm = Tired angler
There are two approaches to the same problem, one focuses on the solution, one focuses on the prevention. The solution of snagging up without losing gear is to increase your line strength. The prevention is to recognize the fact that heavier line is unnecessary for the target fish so avoid getting yourself into snagging on the bottom or body parts of a fish other than its mouth in the first place. The prevention allows you to downsize your gear, spend less money on line and terminal tackle.