I would suspect that many have probably never had the filter cleaned. It's the same for 500s, 600s, 850s 1100s(?) etc and they seemed to survive o.k.
Probably just keep an eye on the oil (for colour/cloudyness) and change it a bit more often than you would normally ? They only hold 2.1 litres so not something that is going to be a big ticket item as long as you can do it yourself.
A lot of the suggested methods of holding the crank are a bit brutal / agricultural.
The correct Fiat tool is A60161 ( I think). I've only ever seen one of them.