I really don't have anything against paying for a mobile app or similar feature. After all it's a lot of work behind this project. But I do not invest in monthly paying rates for this type of upgrade. I like to have control over my expenses.
I get what he's saying (your avatar looks male, my assumption of course), sometimes a surprise bill comes up and either you need to postpone your next payment (AFAICT, the Terms do say "cancel anytime") and give up your hobby for two weeks to a month, or do the beg/borrow/steal angle of things. People want to re-sub at a date that isn't going to screw up their budget (rent being due on the 1st, and being paid each Friday being one type of annoyance... sometimes, you're paying rent on two or more paychecks because of how the days land on the calendar. Likewise, monthly billing in this game probably triggers on calendar dates like any other online payment.) Or, for the 18 and younger crowd, it's concerning IF they can pay at all (i.e.: a parent buys a one year sub and the following year, they decide not to renew even though the account user wants to continue: bad grades, hardship, etc.)
But I understand the perspective of online business, it's not their job to mitigate every single player's difficulties in paying their bills. Do that too much, and your payment system begins to resemble AOL in the early 2000's where simple processes like address changes, downgrades, or cancellation is no longer an available option to their customers.