Obviously I can't speak for every country and every bank, but at least in two countries and with two banks they are trying really hard to get me off the hardware tokens and onto mobile phones.

They have done all kinds of dark patterns, for example they update the website (which eventually becomes a mandatory update), but that requires relinquishing the hardware token, or they update their mobile app, and if you even try to log-in into the new app they automatically cancel your token, etc.

When my token's battery died, they didn't want to give me a new one. They said they don't offer the service anymore. Only after escalating N times and explaining that I need a hardware token because their SMS-based 2FA didn't work internationally they gave me a new token. Suddenly it wasn't discontinued anymore. Now they moved off SMS-based 2FA to some mobile app, so I suspect next time I need a token I won't be able to get it.

Make no mistake, enjoy your TAN generator while you can, because you will not be able to enjoy it for long.

In the country I live in right now, the only way to get a proof for your COVID-19 vaccination is if you "voluntarily" enroll into some phone-based authentication scheme with your government that requires a modern, non-jailbroken iOS or Android device.