I will express an unpopular opinion - but BTC has not achieved any success as a currency. (Not to mention it TPS)
All this time and until now, the entire cryptocurrency has been solely as a gasket between the dollar and the user. After all, so smart people once decided to use BTC as money and shout about it everywhere, on every corner, but at the same time when they saying "Bitcoin" they mean "the number of dollars for 1 coin". In BTC, there is absolutely no sense in such a situation because it is a complication of life to yourself.
As a means of earning money through trade BTC is probably one of the best phenomena in the last 10-20 years, because of its exorbitant price.
But this price will not be eternal and it will not grow forever. If today my big mac costs $ 6 and tomorrow it will rise in price to $ 8 - this means that the day after tomorrow I will receive $ 2 more and in general it will suit me.
And if today big mac costs 0.00001 (conditionally) satoshi and tomorrow is already 2 BTC-then this is a reason to commit suicide or go into the wildest depression because all your savings are lost forever.
I agree with your opinion. Bitcoin has really become very famous now. However, only a small percentage of people own it in their wallets. However, even among those who bought bitcoin, very few use it as a means of payment. The infrastructure for this has not yet been developed, and besides, why use it to purchase goods or services, if in general it is constantly growing in price and making a profit.
However, indeed, it will not constantly increase in price. There will come a time when it will stop growing and it will be pointless to just keep it in the hope of profit. After that, the attitude towards bitcoin will change.
The problem is not even that BTC will not always become more expensive and will not always become more and more popular, but that everyone who uses it sees it exclusively as an intermediary between themselves and the dollar, arguing that it is "secure" and "anonymity".
Believe me, in the 21st century, it still possible to be anonymous and to do shady things if you use clean and official tools, mixing somewhere in the depths of some rare and totally impersonal transactions (big crimes in the world still do with fiat) or for real privacy they can use ZEC/XMR .
Until cryptocurrencies begin to act as money by themselves, in isolation from the dollar/euro/etc-they will remain as just another investment instrument of currency for geeks