If you celebrate or commit to Earth Hour, dimming/turning off your lights and parring back your electricity use between 8:30pm and 9:30pm, good for you - participation is fun.
However, let's be honest that Earth Hour is just about the minimal you can do, and most don't even do it. There was a dip of 3.6% in Toronto's power usage during Earth Hour, a good amount to be sure but it won't be saving a polar bear anytime soon. It's a gesture, nothing more, and if you didn't participate then you've honestly done nothing more or less than anyone else in the grand scheme of things.
The same goes for the trolls online who say they're turning everything on to spite Earth Hour or castigate those on their phones saying they're going to participate because a phone is a powered product. The amusing part is that the only true effect of their trolling will be on themselves, considering that they pay their own electricity bills, not the people they're making fun of. Again it's simply a gesture, as is the stupid "Human Achievement Hour" which serves only as a parody and strawman of climate change deniers and nothing more.
So what is the point of Earth Hour? That is a good question. I like to imagine Earth You serving as a tool of awareness, rather than actual action, on climate change.
Or maybe it should not be about climate change alone, and simply as a reminder about the total impact human industry and technology has on the world around us. Even simply having the lights on to keep out the dark requires a steady flow of power, and while that is certainly an achievement it also has effects on everything from our local communities to the entire planet that we need to recognize and be concerned about.
Climate change or no, our everyday comfort comes at a price to the environment, and that is what is important to keep in mind. Forget your nitpicking over the use of phones or streetlights, because that misses the point entirely - Earth Hour is not going to save the planet, but it will hopefully remind us that we still have one and if we wish to continue to live on it, we need to be mindful of our impact.
Or maybe you can just be a child and yell at strangers on the internet about how they want us to go back to the dark ages. That seems much more productive honestly.