Well.....maybe, maybe not. I own both a Storm and a Camp, as well as others. The Camp is not difficult to take care of. It is not so often that you need to pull the stock for cleaning. 99% of the cleaning it requires only needs the bolt locked back. With a Hi-Point 995, a low cost and really complex rifle to take apart, the manufacturer tells you a "complete" cleaning, that is breaking it down, is only require after 1,000 rounds or so.
To remove the action on the Camp you do remove two screws. Two...not many and not tricky by any means. Look at a Ruger 10/22 or a Marlin 60. Remove a screw or two to break down. 12 millions of those two sold with few complaints about them being "difficult" to clean.
As for the "plastic" trigger housing, again, not a big issue. It was a design decision based on cost to build and after years of use they are still running. Look at the Ruger 10/22. How many millions of those or the Marlin 60 have been built with a plastic housing and they also have survived. BTW, a new spare trigger housing for the Camp is less than $20 if you want one for security or peace of mind. I can't recall of hearing a Camp ever being rendered unworkable by that part. (Not saying its impossible but no one has reported it as far as I know).
"Modern designs" making it obsolete? That was Kel-Tec's song when they replaced the original Sub9 with the Sub2000. Of course I recall at the time that the Sub9 was much too expensive to make and they brought out the "improved" version to be competitive. It was "improved" only in being made cheaper to produce there bye improving its price, not its function and durability.
The Camp was and is a fine little carbine that is well built. It was expensive to produce and cost and changes in tastes forced Marlin to discontinue it, just as Ruger did with their PC9 and PC40. The M-1 carbine look faded and the AR black rifle look became popular. Style and tastes change....just like they do in clothes, motorcycles, cars, and so on.
As for the "weak spring" and the buffer, those things happen on so many firearms. Look at the aftermarket for "improved" parts for AR's. Piston kits, buffers, enhanced bolts, the list goes on and on. A new buffer and recoil spring for a Camp is a very small expenditure costing less than a hand guard for an AR.
The Camp, fitted with the proper recoil spring and buffer will last for many, many years.