I've been into arcade machines my entire life and even worked repairing them for a brief time. Due to space restrictions though I can no longer have more than one at a time.
I guess you can call me a "purest" as I'm anti-MAME and anti any multi-game machine that combines what would be standalone games. To me it defeats the whole intent and purpose and is not the same. if the members of KLOV which is a major forum feel the same way then maybe theres some truth to it. I've never gotten the vibe from there that it was solely to preserve the value of their machines either. Even though I'm only a fan of the original dedicated machines, I have no problem saying that in this day and age people taking interest in these old games no matter how they play them is a good thing.

I also strongly feel as if they should keep the CRTs as well but completely understand the issue there. CRTs are quickly becoming an extinct species so in the long run if we want to continue playing our original machines we might eventually be forced to put LCDs in them. That is unless someone starts reproducing all of the CRT components but I'm guessing the cost might outweigh the demand like re-producing the RC10 for instance. This brings me to my next point...
Vintage RC10s and arcade machines in the current day both hold a lot of parallels to one another. Most feel that they should be kept within their time period with a few exceptions. Some like to try and bring them completely into the current age
(MAME = Whats old is new) which is neat but again, kind of defeats the purpose. It's really neat to experiment to see what can be done with modern technology but in the end it should be kept as that, an experiment. If that's all everyone did than whats the point? It's like if everyone who owns an old car puts a 2013 Corvette drive train under it. Just go out and buy a 2013 Vette.
The whole point of an original arcade machine is the total package. The unique characteristics that were indicative to each individual game if you will. The size and shape, the cabinet graphics, the sounds, the lights, the monitors, etc... Those were all tied in and part of the games experience which was just as important as the game itself. With things like MAME, all you're doing is standing up at a computer and playing old games. Now to me that's
not the same.