Ironically the rise of Jack'n'Jill competitions in bachata has lead to paying more attention to dominican style, because one of the random songs they have to dance to often is dominican (and judges will kick you out if you dance sensual to it). So if you want to succeed in competition you need to learn it, like it or not.
The same happens in WCS, where one of the competition songs played usually is blues (meaning that traditional US black old blues from 1940s-1960s), and it demands other style of stepping. Judges will kick you out if you don't blues step to it. Blues never gets played in my local WCS socials as people don't like it (the blues step is fast and difficult if you're not used to it), but if you want to succeed in competitions you need to learn it, like it or not.
The decision makers who create the rules of dance competitions usually are older and feel responsibility to save the traditions. Seen this way ironically competitions can help save traditional dance styles. The advanced dancers all acknowledge this is a good thing, it's only annoying to improvers who feel overwhelmed by having to learn several styles at the same time.
If Jack'n'Jill will ever succeed in salsa it's well possible they decide that chacha is part of the songs. This way competitors would be urged to practice chacha, like it or not. We will see.
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