I agree, and that's always been good for most guy's shooting a 100 rounds a year. Now, with brass not available and over priced, maybe one should anneal every reload.I've never annealed my brass but many like CC do.
Some, like him, do it almost every firing but many others only do it after 3-5 firings.
I'm sure it helps because lots of guys swear by it, but for a hunter, it's probably not critical.