I want to like them, but Exynos has consistently ruined it for me. I live in one of the countries that got the Exynos versions of their flagship phones until very recently. I had a Note 9 which the US-based Android world raved about, but I was unimpressed because the Exynos version was just that much worse and I feel the same way about the Galaxy S21+ I have now.
The processor overheats and throttles after the slightest workload making the system UI a laggy, janky mess and the battery life is mediocre at best. The modem is crap too, it switches between 5G and 4G for no discernible reason far too often.
The camera is infuriatingly slow all around; slow to launch, slow shutter, slow processing and slow UI. I miss so many photos of my toddler because of it. I had my phone replaced under warranty for an unrelated issue and the replacement has the exact same problem.
thank mr skeltal