Dont see any reviewers reviewing any samsung smartphone if its not snapdragon or mediatek.Buyers who buy exynos processor are only ones ignorant about smartphone industry.
Some people don't use phone that much and exynos is cheaper so they go with those phones. Honestly if you're a normal user you can easily get away with exynos (only the flagships and FE not the cheaper ones). People like use however who are power users can't fathom exynos 😂
Recent Exynos are very much fine for casual users. I had been using them for the past two years and didn't find any issues. It'll heat up only when pushed to the limit like online gaming. For budget devices, it's okay...
