Is the Mexican Peso (MXN) a good proxy for sentiment towards emerging markets?

I’ve been reading about emerging market currencies and keep seeing references to the Mexican Peso being used as a gauge for overall EM sentiment. Can someone explain why MXN specifically gets this treatment? Is it because of Mexico’s size, its trade relationships, or something else entirely? I’m trying to understand if watching MXN movements can actually give me insights into what’s happening across other emerging market currencies like the Brazilian Real, South African Rand, or Turkish Lira. Also, are there any limitations to using MXN this way? I imagine Mexico has its own unique economic factors that might not reflect what’s happening in Asia or other parts of Latin America. Any thoughts from traders who actually use this approach in their analysis?