What is factually incorrect about this? Brake fluids can absorb water over time, and you can lose braking power, it is a fact. depending on how hard you drive your car this is more or less likely to happen. My Accord is a DD and rarely sees any hard driving because it handles like the overweight, FWD, understeering pig that it is. OTOH my Miata's brake system gets a workout quite regularly, and thus will need to be flushed/bled on a regular basis.

Mushy pedal feel usually creeps up on you, and you never realize how bad it was until you bleed/replace the fluid

/bill