Non-Hispanic whites have been avid consumers of rhythmic music since the 1950s. Why have Hispanic whites remained so hard-wired for rhythmic after all these years? You'd think that a decent percentage, three or four generations removed from the Caribbean or Central/South America, would acquire a taste for more melody-based music, but it never seems to happen. Why isn't musical sharing and absorption a two-way street?
The whole US music scene has been moving more rhythmic.
Some say that rock played out and fragmented. Others say there are sociological reasons behind rhythmic preferences. Whatever it is, since the 90's we have been seeing rock, even in Fargo and Billings and Duluth, getting lower radio shares.
Interestingly, in the few places where we have fourth generation Hispanics and beyond (Rio Grande Valley, El Paso, San Antonio, ABQ) we see formats like country doing very well with later generation Hispanics... just not so much for rock. In fact, in San Antonio, the two country stations have nearly half their cume with Hispanics.
But the rest of the markets... NYC, Miami, LA, Dallas, are mostly second and first generation. The later generations are much smaller and diffused among many formats.
And the biggest thing in Latin music is reggaeton which is all over the radio from Chile to Chicago... it unites younger Hispanics of all national origins... and has produced the most viewed YouTube video in history. Lots of Hispanics who were listening to rhythmic CHR in English are now back with the Spanish language equivalents because the music is better, more varied and more relevant in lyrics and "feel".
And there was a period in Latin America, mostly the 60's to the 80's, when CHR was rock-leaning. In fact, a station in Buenos Aires did an all-Argentine rock format in 2000 that shot to #1, but has now declined to 6th or 7th with other stations also playing less rock-leaning songs and more rhythmic ones. Remember, not all listeners in Latin America listen to rhythmic music in their own nations... there is as much format diversity... or more... in Latin America as in the US.
Even if you look at the annual Coachella "rock festival" it is not very rock any more and mostly rhythmic instead.