I am not sure if I would categorize it as a lie. I think it is unprecise and probably misleading. I have very little expertise on the subject but from my perspe

I am not sure if I would categorize it as a lie. I think it is unprecise and probably misleading. I have very little expertise on the subject but from my perspective, it is more like a driver/support problem. If everything is supported (e.g. some Laptops, but also Smartphones) Linux has quite a good energy footprint, but there seem to be many devices out there which do not have good support (at least out of the box). One of the problems here is that power-draining can happen by different components. Quite popular are graphics chips, but other components can be part too. For example, a friend of mine has problems with his device waking up from s2idle during transport. That is not exactly what you would expect in such a discussion, but from a users perspective, he has less time to work with his device given his usage pattern. For me, this isn't much of a problem as I prefer working on a desktop, but I wouldn't accuse someone of being a liar just because he had a bad experience with power consumption on Linux.