Why do people sleep on Yamaha guitars?

Today I went to one of my local guitar stores, and was interested in buying a Martin or Taylor before the tariffs hit Canada. (Lets ignore politics here) I was just in the market for a while to upgrade from my Canadian made Simon & Patrick songsmith which I still love but it is more of my beater guitar that I lean on things and use a lot. I played a handful of Martin/Taylor and even some Gibsons and then I came across a Yamaha FGX5 Red Label they had used at the store. I asked about it, and the staff member I've bought a few guitars from in the past told me hes suprised its still there, and people often just don't want it because its a Yamaha. He said hes had customers try it out, and love it but then "But its not a Martin". The body/top were identical materials to the Martin I was looking at initially as well as the ebony neck. Is there a stigma on Yamaha?