Big difference in the two processes .
Thick or thin tires ?
What level of competition ?
Thins just finish .
State race or big money show , cut , even highly contested local stuff .
Tire life more important then possible speed no cut .
You may also consider scuffing your Maxxis and letting them set up this time of year.
I like to cut everything- not necessarily to make the tire thinner or even to profile the shoulders on a Maxxis (there's not much to work with to begin with) but just to get the tire flat/true. Minimal cutting, followed by sanding.
Agree though that most just sand and/or scuff them.