As far as I know, it’s because 29 Palms and Yucca Valley are in San Bernardino County. That entire county is part of the Los Angeles market, along with all of L.A., Orange, Ventura, and Inyo Counties. Oddly enough, Esmeralda County in Nevada is also part of the L.A. market, despite being geographically closer to Reno. (Proof here:
Los Angeles [market_term] Map In [oceanwp_date])
Yet when use the local channels lookup tool on DirecTV’s website, typing in an Esmeralda County ZIP code gives me Reno channels.
Riverside County is split between the Los Angeles and Palm Springs markets, with eastern and western portions of the county being in the former; and the central part of the county, including the Coachella Valley, in the latter.
Chances are KESQ is a “significantly viewed” station in 29 Palms and Yucca Valley, which may explain why it’s on the Spectrum lineup there.
Similarly, Spectrum in much of Ventura County carries Santa Barbara ABC affiliate KEYT for the same reason.
I hope I was able to shed some light.