Two points,
(1) The philosophy is clear. An affordable speaker with decent amplification (and source) makes more sense than an expensive speaker with a cheap amp (and source).
(2) Amplifier power ratings: Watts per channel specs alone are useless . It is high current delivery (amps) that needs to be examined. Although it’s less of an issue now compared with the Jurassic era days (70’s) of valve amplification, if your speakers are demanding to drive, you’ll need a suitably muscular / beefy amplifier to support them.
Don’t look only at the headline power figure - see what happens when the impedance drops to four ohms. If the number nearly doubles, then your amplifier has good current delivery and will be capable of driving more demanding speakers.
Why do speakers improve with more powerful amps?
So, if I have a solid state amp that more than adequately powers a speaker, why do people recommend a larger more powerful amplifier to improve things?
Why do more powerful amplifiers impact speaker sound quality in a favorable way? Is it because more power is reaching the speakers? Mid and Tweeter drivers I was told receive a reduced signal versus bass drivers which receive relatively more power via crossovers. All for the purpose of balancing a signal going to the various drivers.