Earlier quoted context omitted.
Nobody is seriously proposing to add enough money to transit systems that they can run a system with such great coverage and frequency that there isn't anyplace more service wold be needed. Until you are funding transit to that levels we should charge fares.
Nobody is charging enough that revenue from fare collections can provide this. So what is your point then? Clearly funding from then government can be enough to make fare collection an insignificant amount when it comes to paying for upgrades and new service.
The working poor who use your system would prefer more service to cheaper fares in general. Sure there are some too disabled to work who need cheaper fares, but they are a tiny minority (and should be handled with a separate subsidy from your social works department). The rest of the riders want more service as their main consideration. (again at the current fare pricing - you can make a straw man what if fares where $1000/month)