In my specific case (or for anyone living in Croatia) this is not an issue.
2G/Edge will remain active in Croatia for at least couple of years because both of our two major carriers (A1 and HT) have more than 5 million of devices still using GSM/Edge (mainly IoT devices where high traffic/bandwidth is not required). The main reason for this is almost 90% country coverage with GSM/Edge whereas 4G is only at ~50-60% and 5G is practically nonexistent - this reduces infrastructure cost as there is a strong push from EU to expand 5G connectivity so they really don’t want to lose their existing customers that still rely on GSM and don’t want to upgrade.
3G is being phased out for almost 5 years now but as you can see from this coverage map - even 3G is still pretty much live and kicking (at least for A1 carrirer) in 2023.