I don't think he's saying that to anyone directly. I think what he means is that the more people disseminate the information on how to get incomplete release candidates the more likely someone who doesn't quite understand what they are doing and what to expect installs one, trips over a bug, and then kicks up a fuss that their phone is broken. At that point, Jolla will be more likely to lock down this public channel, and developers like coderus who take pride in delivering updated patches / software simultaneously with the release of an opt-in update won't be able to do that any more, and we all lose out.