Do they all get axed when Puma 2 comes into service
Yes; civilian ones do. I cannot think of any major operator still using them. Even the 332Ls are being farmed out to second level owners.
I have landed both in soggy ground in both the UK and overseas and the single wheel has a far better footprint than the old twin bogie. Because the undercarriage leg cants back if the wheel gets tangled up with rock and bricks it is allowed to roll over them. I have been witness, ie in the cockpit, to some horrific arrivals that would have Cat 4d a 330 even if it had stayed upright. They can roll over; but most have been as a result of a strong crosswind either being towed or offshore refueling.
However it's done now and it will not involve me.
After all...the Puma was "new" in the 1980's.
So was the Blackhawk. It started with the US Army in 1979.