Yes Merlin does have a radar - I see you forgot to mention all the other tactical input it brings to the battle - (which is considerably more than current Naval Aircraft with radars!)(convenient that you forgot that huh?)
As you have been at Cu standing by hangar doors - Maybe if you were aware of the bigger picture you would know why they are not at sea. How many Merlin capable platforms are at sea at the moment ? (maybe, just maybe its not Merlins fault)
And as for the upgrade of 30 - You may have noticed that a few of them have crashed and its very difficult to put them back together after that!
When you are standing by the hangar doors next maybe a chat to some of the people who use them (shocking advise I know) rather than just slag off the advance of technology.
Yes I know we all fear change, but , can I suggest you go on a POAC course and you will learn a lot more - Good Luck in the future!