If you're a SWE in an English-speaking country, you almost certainly make $20 post-tax for at most one hour of work - 30m at SV salaries, as little as 15m if you're at a FAANG-ish company. Is it conceivable that you would spend less than an hour a year maintaining something like this if you were to do it yourself? I don't think so.
Most people can't earn money in increments of one additional hour, of course, but it still sounds strange to hear people say "why should I spend [the amount of money I earn in half an hour] per year when I could just do it myself [with an amount of professional effort I would expect to be paid 20x as much for]?"