Not everybody with a lapsing cetification is lazy. Some entire COUNTRIES don't have a Pearson Vue center. There was one post on the FB page of a lady who had to first make an appointment to get a visa with her government. Once they finally get around to granting the appointment, she has to book the exam. But she hasn't been able to book the exam in 5 days, and her appointment time for the visa came and went. She won't be able to get visa in time to certify prior to expiration.
On the Cisco front... it's not that far fetched that a non-lazy person might be about to lose their certification. Maybe you start booking recertification exams somewhere around 3 months prior to expiration, you decide you'll try an advanced exam to move up in the world. You take the exam, maybe you fail it. 2 months left. You then study and have to find a center with an appointment. Maybe 3-4 weeks left at this point. Maybe you fail again. So you decide you can't pass the higher level exam and study up to recertify. On Sunday you try to book the exam. You can't. And you can't Monday, Tuesday, Wednesday, or Thursday. And it looks like you probably won't be able to book Friday either, and maybe the whole weekend. Now you're really in trouble. Will there even be an appointment anywhere? Maybe you have to travel out of state to reach a Vue center.
I'll give you that there are some procrastinators who wait for the last minute, but 5 days of being unable to book or take an already-booked exam is atrocious.