A quick google shows QR came out in 2002, had apps on all phone platforms in 2010, and was native to iOS in 2017. So at a minimum you are 5 years behind, although you could use an app fairly easily.
The average phone life before replacement is 2.5 years in North America [1] so you are somewhere between 2x and 4x outside the median: an outlier but not outrageously so.
I recently replaced my decade old Blackberry because it either did not support VoLTE or I just couldn't find the appropriate firmware upgrade for the modem, but either way the telecom refused to service it. If it had support for scanning QR codes, it was very well hidden, as I actually spent time trying to get it to do that. I now have a Nokia of some sort, pointing the camera at the QR code doesn't open a web page, and that's all the effort I'm interested in investing, since the entire notion of QR menus only serves to make cellular telephones more mandatory for participation in society, which I wholeheartedly reject. The day I can't walk out my front door without a telephone and accomplish my tasks, I'll move to the mountains and become a hermit.
The average phone life before replacement is 2.5 years in North America [1] so you are somewhere between 2x and 4x outside the median: an outlier but not outrageously so.
1. https://www.statista.com/statistics/619788/average-smartphon...