"...an Induction anneal..." Annealing is an 'As required' thing only. It is not necessary otherwise.
While there is some debate on this, the reality is that once a neck cracks, the others are close to and will crack as well even if annealed.

As annealing accuracy is tough, I under anneal and anneal often enough to prevent that issue.

Once very 5 cycles the cases get annealed and they are trimmed. As I have a motorized trimmer its easier to do all regardless of length, if they need it, it trim em back, if not they go in, back out and off to the races.

5 rounds of firing does not have any too long. Its worked nicely for 4 years.

Like changing your oil too often, it may be more than needed but it may be whats needed as well. Doesn't hurt to do it more often.