All laptop blowers die. It's not just dells. You have a grudge with dells, and I'm going to make fun of you every time you use said grudge.

On the bright side, Dell blowers are separate units, and can easily be replaced cheaply.
On IBM Thinkpads for example, the blower is an non-removable piece of the entire cooling channel, which consists of the blower, the heat fins, the heat pipes, and the metal plate that sits on the CPU. You can not disassemble it without breaking it, thus making a simple fan replacement a good $100 investment.
It's not exactly a grudge as it is hating retail laptop manufacturers. Dell, as well as HP, Toshiba, god knows what else, is horrible
The only 2 brands I can actually trust with laptops is Asus and MSI. Everything else, is horrible.