Blame the mainstream media for spreading the "store of value" propaganda to the people. Now everyone believes Bitcoin is some sort of Gold alternative or "get rich quick" scheme. Besides, there's the issue of market price volatility. How can anyone use BTC as a currency this way? Unless you don't care about Bitcoin's value in Fiat terms. Then there's the issue of limited transaction capacity, which results in high network fees and slow confirmation times.
Because of this, I'm afraid BTC will remain a store of value forever. Still, it's a free (as in freedom) currency. You can use it any way you wish. Hopefully, Bitcoin replaces Fiat in the future. I mean, that's the dream. Right?

Why blame the media when we are the ones directly using bitcoin as an investment even though we all know very well the original purpose of bitcoin? I tend to agree with what CryptoBuds says. We should not blame anyone when we ourselves have contributed to bitcoin straying from its original purpose.
As for making legal tender it is also very good and seeing from
this data actually apart from El Savador there is also the Central African Republic which has made bitcoin a legal tender so far.
I think this data is too old because bitcoin is no longer legal tender in the Central African Republic. They claim that their attempt to make bitcoin legal tender in the country failed after just one year.
https://www.nasdaq.com/articles/the-fall-of-bitcoin-in-the-central-african-republic:-why-this-legal-tender-experiment