It really depends on what your value proposition is, as to whether VA has any value to you.
Jane and Bob planning their once a year getaway probably won't be too concerned about aircraft type, what's on the menu, how many status credits they get, or how grumpy the flight attendants are known to be. They are very likely to be looking for overall price and convenience of schedule in terms of their holiday plans. In which case the example given in the OP would be relevant for a value proposition based on price. Infrequent leisure travelers very often choose the cheapest overall price, wanting to save money for holiday activities.
But John Platinum who sits on an aircraft for 30% of his life is likely to be highly concerned with all of the above. He's looking not just for the cheapest price but for the best overall experience payoff according to his needs, and how much value he can add to his FF account at the same time. For JP, whether or not the hangars in J class are wood or metal matters....
Having coloured headrests, 36" legroom or a classic understated cabin with the right selection of wines may not drive his decision but they may influence the outcome should price and schedule be quite similar.
This is the basic conundrum of airlines. All airlines are the same in terms of hard product. They all use the same planes, similar seats and very similar layouts. They sell tickets to go from one point to another. They all basically charge similar prices too because there is a fixed cost to providing an airline service that all of them are subject to. The once a year traveller is nice, but they don't regularly pay the rent.
Profitability, as demonstrated by QF, comes mostly from people who are repeat travelers. QFF, is qantas' biggest profit centre. The value proposition for the FF is very different to the occassional traveller. Airlines structure their product to accommodate those who travel most often, the price seems less competitive, but it's all the FF trimmings which influence the most profitable passengers one way or the other.
For the leisure traveller, there are sale fares and basic fares which are offered at various points in the forward bookings calendar. It's widely known that airfares are least competitive both very far out from the travel date and very close to it. There's usually a sweet spot for every airline where their fares dip in price to try and stimulate more demand for seats.