For that matter, the internet isn't material either, but there are many sites on it, this forum for example. Stocks in the markets have long been digital, not physical, which, like bitcoin, can be displayed on your mobile phone screen. Sending a telegram message also consists of numbers. In fact, a lot of things are digital now, but for some reason bitcoin is the only scam. Strange.
Numbers can be displayed on my mobile phone screen, not electronic coins that people call bitcoins. Those are not real. Stocks are not digital, but the numbers that count shares in stocks can be digital. I recommend you to read the OP instead of just repeating usual nonsense.