One guy doing it isn't going to harm much. It would only become a meaningful issue if thousands of people decided to go on a race for world biggest keyboard display.
Most hobbies, sports, entertainment, etc. are wasteful and with little to no regards for the environment.
Some hobbies, sports, entertainment have low impact on the environment. Like gardening, woodworking, running, hiking, playing music, playing chess, etc.
There are almost 8 billions of people in the world. On the scale of billion multiplied by X. X is because each of us buy, consume, throw away alots ot stuffs. The combined effects is no longer negligible. The productions of goods to satisfy these billions of persons causes a stress. Each time we buy something, there is production, shipping and soon go to waste.
It appears 80% of forest fire are man made. Sometimes, it's because "it's no big deal if I threw my cigarette butt through the car window". Almost every person does some little "no big deal" thing. And yet the ocean is full of plastic waste harming the ecosystem. Compounded with over fishing.
If you happen to be still young. In 30 or 40 years, you will see a very different world.