That's basically what you get in a breakfast burrito or huevos rancheros. Potatoes are pretty neutral so if it matches the rest of the meal, not bad at all. I put hot sauce and salsa on basically everything so it would be fine with me.
Yeah like that list might not be the first things I think of incorporating into mashed potatoes, but also don't think it would be offensive or anything.
Come to think of it, I've seen picante sauce in baked potato fixin' bars.
What's good and what people think is normal for certain foods is in a large part cultural context and habit. If people weren't used to it, I doubt if someone saying "you know, what these fried potatoes need is a lacto-fermented tomato sauce with onion, garlic, spices and vinegar" would sound appetizing.