The comments are on an article about someone with "a dream job". Not hard to get to 5000-10000 in that situation if you're highly motivated to leave.

More generally, saying (or implying) "your advice is useless because many people couldn't do it" invalidates a sizeable chunk of useful advice.

Yes, many people don't have 5000-10000 and couldn't. But many do or could, and yet they imagine they couldn't possibly travel/leave job, etc.