Thanks for the effort on a new project but I just don't buy it. It's like saying that you don't pollute because you are using an electric car but the electricity for your electric car is produced by a big old diesel engine. You should choose a less energy consuming coin as metronome if you want to call the coin low energy, not just choose bitcoin because is popular.... maybe you know it already and you will change the metronome coin once you gain popularity.....
Not sure I understand your point. BTC is going to consume as much energy as it does. BLE is just using its block time for the metronome. BLE doesn't contribute to the hashpower of BTC, it's not "powered" by BTC. I understand if you have a political stance against bitcoin, but I still think it's a big energy savings with Bitcoin Low Energy.
I would modify your analogy as, "my neighbor has a huge Hummer vehicle, and every day he drives it, I choose to ride my bicycle and save on the gas. I'm not "powered" by my neighbor's driving habits, I'm just using it as a point of reference for my own energy savings.
BLE.JeKhoAHxad89JYUjU5MqjGaToS5UevJYTm