It absolutely is a different and more insidious type of dynamic pricing.
First, you can use the airline's strategy to your advantage by planning early. It doesn't feel as unfair because everyone gets the same terms and the system is transparent and equal
WaPos daynamic pricing is simply maximizing value capture, without any way of a consumer benefitting. It's 100% lose-lose for the consumer. You always pay the maximum you are willing to pay. No discounts!
I was just answering OPs question about how airlines were transparent about their system and decided to answer it factually.