FSU, Czech, East German, all have cameras that in PC terms, were "challenged". All on a good day would produce as good a shot as you are capable of, plus, they look interesting, and often the glass is quite interesting.
The MF 30mm Fisheye and the Kiev 88 along with their concomitant low or reasonable prices, and appearances, plus the Feds, Zorkis, Flexarets, Pentacons, Exacta and the one that got away, the Sputnik, represent kind of works in progress. You look at some more than others, and just see the potential.
Add in that, until recently, many repairmen had a similar attitude illustrated in the OP, and you get a project.
Which reminds me of the MG in the garage that needs a battery, fuel pump, and someone to figure why the headlights go out when you try to use the high beams, though the lamps are new. I have not carried so many tools and parts in the trunk, eh, boot, of a car in years, and if it rains I look for an underpass. Is the second seat for a mechanic? I was keeping a long screwdriver behind the seat so I could turn it around and smack the fuel pump to get me home. Alas, it needs more than a smack.
I was happy to see folks on this forum making these cameras perform, which is the same in the case of any photograph in that you are always making equipment perform. I too have a collection, though, sadly I suppose, most are waiting to be used. That said, I just had my 85mm SM f2 Jupiter something, cleaned of the hardened grease, because there are times I like its image using an M8.
The last time I sold a Flexaret, which had been carefully selected and serviced, carried from Prague, I refunded the money and let the guy keep it. He still bitched me out, struck me off his Xmas card list, and flamed me.
The 30mm Fisheye, some of the CZJ glass, and the Kiev lenses, I save to use on my old Mamiya 645 bodies with an adapter, I think made in Poland. A 1000s complete went at the Cleveland show for $100, far less than a repair.
Which is the bottom line, there are times I like using them, there are a variety of ways (many of which I see on RFF, thanks guys) to get them to produce, and I need to call AAA which has had my money for 40 years without towing my car, until now.
Your mileage will vary, but there are some good photos being made, some fun being had, and history, Igor recently told me the K in 4K has something to do with the Russian for lever which begins with a K, ;-)
Regards, John