It's not fair that you should have to use the internet and have an internet device to pay tolls.
OK, let's accept it's not fair. Let's accept that people who are "militantly offline" aren't going to use technology.
Roll on ten years, to 2028. Do you believe that there is going to be a sudden uprising and a return to five pound notes and cheques in envelopes, or that the move to online payment will have increased? Those who are shouting "it's not fair", do you think anyone is listening? So leaving aside "it's the principle", "it's not fair", "what about the orbital mind control lasers", which do you think is going to work better: overcoming your prejudices and using a mobile device, or continuing to yell "it's not fair" and continuing to disengage?
My father-in-law claimed he'd never use a debit card, for reasons which were incoherent. He now uses a debit card, for the simple reason that the cheques that "everyone" would be accepting from now until the end of time aren't accepted for food, fuel or much anything else.
It's a seemingly common process. Change is proposed. Some people decide that change is bad, while 90% of the population embrace it. Because "Won't! Shan't! Not fair!" isn't a good look for people who aren't toddlers, elaborate arguments are constructed about how it excludes the elderly, the disabled, the poor and a range of other sympathetic groups, or that it's encouraging the orbital mind control lasers. That the overlap of those groups with the problem domain is very small, or that there are other solutions, or that the change is actually better (the "computers, what about the blind? eh?" argument appears entirely resistant to the fact that screen readers and online brailers are utterly transformational compared to paper) or that the orbital mind control lasers aren't a real problem is ignored, and the elaborate arguments are made more elaborate to appear reasonable.
We had this over chip and pin: whatever happened to chip and signature? Over mobile phones; the people now saying "I only used my old fashioned phone" are the people who twenty years ago said they'd never have a mobile phone. Over DTV, when there was a large fund established to help "the old people" use digital TVs which was a complete waste of money, as the problem didn't exist: the surplus is now funding rural broadband, I believe. Over direct debit, ATMs, credit cards, computers, telephones, microwave ovens, automatic chokes on cars, and, and and.
Technology changes. Some people dig their heels in. Most people don't. A generation later, no-one cares any more.