The linked article does not support any of the conclusions in your post.Interesting article here on the adoption of Bitcoin by the citizens of Turkey as the Lira continues to collapse. Even though not an "official currency", its fast becoming an unofficial currency.
https://news.yahoo.com/turkey-makes-case-bitcoin-erdogan-172755488.html
The writer of the article, David Z. Morris, concludes:
"Turkey is fast becoming a case study of bitcoin’s potential benefits for residents of countries with fragile currencies, or authoritarian leaders likely to pursue short-term political gain through inflationary policies."
To me, it was obvious BTC would start to be used like this. In many countries where the USD was the "informal currency" of the people, BTC has become the "new USD", for many reasons including obviously its electronic convenience, the ability to transact in any amount, and the ability to virtually send anywhere in the world (as opposed to face to face physical transfer).
It does say “ Bitcoin trading volumes are rising in Turkey” and “ Some Turkish citizens decided to take their business elsewhere: BTCTurk, one of a handful of local exchanges offering lira/BTC trades, has seen a noticeable uptick in volume, according to public data”.
There is no data, however, to give even a hint of the volume, so we have no way of knowing the significance. A link in the Yahoo News article does point to another issue which you forgot to mention. Apparently two crypto exchanges have shut down, each held “hundreds of thousands of accounts”, all the crypto assets are missing, the owner of one exchange is in jail and the owner of the other is missing and accused of absconding with more that $2B. The numbers are unsubstantiated, but they certainly cast doubt on how just how closely the Turkish people are embracing crypto, if at all.
As for your assertion that BTC is replacing the US$ as the new “informal currency”, there is no data or evidence to support that. If one objective of this thread is to inform, the exaggeration and hyperbole get in the way and don’t help.