Don't know why it's fashionable to hate this guy. Did he upset the media?
I have a nest thermostat and it's superb, it's none of the things mentioned here, has always worked perfectly, visibly reduced my heating bills by about a tenner a month, is easy to programme, easy to use, and intelligently heats my home, rather than a dumb schedule.
They also don't prioritise apple over android, that's another lie. The android phone app is more advanced and is updated on the same timescales are the iOS version.