A clutch has a fair amount of maintnance associated with it. If you dont already break sheer pins you are unlikely to start breaking them on a new mower. Which essentially means 0 maintnance.
I was PISSED when I found out my rotary cutter had a pin instead of a clutch like the dealer had said. I found out getting ready to do the hour long annual clutch maintnance you need to do. I then realized I'd never had to do anything to it & probably (hopefully) never would. I downgraded to mildly annoyed at worst. Had 0 maintenance (other than greasing & checking the oil) when I sold it with the L3200 3 years later. On an unrelated note I'm now a flail mower convert (even though flails are noticeably more parts & maintnance than rotary cutters).
My tiller has a clutch on it & while it works, it's a pain to do the as nual maintnance on it. No maintnance when it slips briefly though.