This must be a US thing, I've not seen a 5G fee fere in norway, as long as there us 5G coverage in the areay you are in ( narionwide coverage by at least one mno ( and by extension all the vmnos that use their network) by the end if nex year
Must just be some carriers too. T-Mobile sent me a notice that 5G is being included with my current plan at no extra charge. Now in two years when I get a used iPhone 12 Pro. I'll be able to make use of 5G.