I don't have any fixed price expectation for January 2022 but i hope that bitcoin will be over 70-80 K.
Also consider that currently bitcoin is looking a bit bearish .
And that is exactly the reason why it is held. One can just assume that the btc will also rise in the near future. When that happens, no one wants to have eaten a 2k burger. But that could also backfire.
If no one pays with btc, it can also be more difficult to adapt. A vicious circle you can say
If I understand you, are you saying the pizza guy made Bitcoin more acceptable, or did he contribute to the adoption of Bitcoin? His story is only relevant because seeing when the price of Bitcoin is today, it is easy to relate to what he would have been worth if he held the same amount of Bitcoin today but that doesn't mean he contributed to Bitcoins adoption.