As they should. They're in this for the long run. It's a marathon, not a sprint.
Which means all the author did was to fuck over a couple dozen other disabled people trying to navigate the process. Good job.
Were I the reader that donated them that $20, I'd issue a charge back now.
I suspect this is a revenge fantasy rather than something that actually happened.
As for who's responsible - it's a mix. Some people who deal with these situations are doing their jobs because they have no choice.
Some are active sadists and do the job because they get to bully the weak.
This happens a lot in benefits management, and also in immigration, in most countries.
You underestimate government inefficiency. You are correct, but I can also see a system that naively prints whatever is verified as a valid entry automatically.
I'm not so naive as to think there's no podunk, crossroads "town" out there that has some mayberry-ass fax machine just spitting out whatever you send it. But given how attractive government offices are to people for either pranking or ...ahem redressing via their fax machines since the late 70's, it's more common than you might believe for even the smallest little townships to have a contract with a company that turns faxes into emails.
Similar approaches are utilized in other areas of british government, unfortunately.
Government works the opposite of industry. In industry you win power/prestige/money generally by getting more profits which usually means making needlessly inefficient process less so (although in large company with multiple layers of middle management this can become completely decoupled). In government there is no concept of profit so you win more power/prestige/money by having more headcount and paperwork to shuffle around which justify your existence.
Also, correct me if I'm wrong here, but: fax's have a timestamp on them, right? If you can confirm that it was sent before a deadline, they'd accept it, right? It's clear in this story that Karen ditn need to read all 500 pages to mark the author on.
That's the dumbest part of this situation. This sounds like an 80 movies trope, but here we are decades later.