Reviewing various crossover impedances then drawing the conclusion that there is a both a speaker and amplifier conspiracy to sell more wattage is not logical.
Affordable high wattage amps are readily available, which is not the same as paying more for higher engineered and costlier parts in high-end amplification.
A speaker manufacturer typically design to a cost/price point and to be efficient enough to be compatible “with a range of available amplifiers” (not just low watt amps) to compete in a specific segment of the market. Andrew Jones doesn’t design inefficiencies just to boost higher watt amplifier sales.
Amplifier guru Nelson Pass has designed both high power and low power amps. It’s not that high or low is better, but it’s matching the amp to the speaker requirements that matter.
TL;DR : Don't be seduced by hard to drive speakers. They aren't more musical.
This statement seems baseless, as it conflicts with first hand experience plus many positive reviews and testimonies from Magnepan, MBL, Wilson, Magico, YG….. Sonus Faber is highly musical.