This sentiment is exactly why it hasn’t worked yet. Yes bitcoin is a currency hence the “coin” in its name but a lot of crypto is not. This is a failure in education in the community and also a failure by the US government to correctly classify the different types of crypto, and essentially label every blockchain as securities when only a few even approach being securities. In their desire to collect tax, they have completely mistaken one thing for another. In the same way the US hasn’t figured out that “tech” isn’t one sector of the economy but actually has 100s of new industries each of which are extremely unique. Facebook and YouTube are not two competitors just because they both are software with ads, they each exist in their own industry and monopolize their industry. You wouldn’t consider TV broadcasting and radio the same industry even though they are both forms of media. Crypto is the same, there is just so much unique software that is being miscategorized.

It might not be what the inventor imagined, but this is hardly an unexpected outcome. BTC in particular was doomed to either be a forgotten novelty, or the wild speculation instrument we see today. It doesn't really have a good mix of features for a usable currency, and its appeal as a currency is largely limited to those ideologically pre-disposed to value anti-inflation over other limitations.

The limited throughput of the blockchain was always going to be a particularly bad problem.

Wait until you learn about MakerDAO