It all depends where you look. In some niches, BTC is used a lot. In some niches it isn't used by anyone (hi HN!) But it's a big world out there, and if you look outside your bubble it's not hard to find people using it.
Re: the last paragraph, BTC did indeed crumple under load for a long time around ~2016, and transaction fees were very high as a result. But lightning network has appeared since then and fees are back down to reasonable levels, well under $1. Those were serious growing pains, but we made it through just fine.
[1]: https://news.ycombinator.com/item?id=31914284
[2]: https://www.wsj.com/articles/how-crypto-is-helping-ukraine-r...