Auto RCM has sadly nothing to do with OP is posting here, it won't magically make the Switch to coldboot directly into CFW
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Up to FW3.0.1 if I'm not mistaken there is actually a chance for a coldboot exploit, however I don't know if it ever will be released I think Nintendo is after who put it online and they are also hard to use (SciresM talked about it).
But he reported that theres actually a chance in the future for a coldboot for FW upto 3.01 and up to 4.1 there is another known vulnerability that maybe could achieve coldboot, but its even harder(though he said it was warmboot...).
1.0 has been reported to have coldboot support and might probably even have coldboot even at atmosphere's release.
Above FW4.1 there isn't anything reported as known in terms of vulnerabilities which doesn't mean later someone could find a new exploit, but, most likely those FW will probably never see the day for a full softmod coldbooting exploit as after the new Switch gets released I think most hackers will probably move for the new Switch trying to find new exploits 4 it and will probably kinda just be coding stuff for atmosphere and forget about discovering new vulnerabilities on the current Switch for FW above 4.1...
For last there also the chance that after someone find a vulnerability on the new upcoming Switch hardware revision, that might also work on the old Switch on current latest FWs, but most likely hypothetically talking, I don't think it will be coldboot...
ps: Best near future chances for a self boot hack is soldering a chip, Team Xecuter will probably show their modchip soon, there is sadly no ETA or new news about it... But community are also developing their own chips that anyone could make and solder, also Kate said that she will release the plans for a DIY cheap chip that anyone can make, but I don't know if she retired 4 ever from Switch hacking or not...