I strongly disagree. Mid range has gotten good and pretty much since phones got 30k in old Antutu (which is 50-60k now), I haven't felt performance to be lacking. Really, phones, even lower end phones have strong chips. Most problems with performance at this point are caused by storage type (eMMC instead of UFS), low RAM (4GB is totally fine, wouldn't recommend less), poor GPU (somehow GPUs haven't seen as big improvements as CPUs did) and obviously software neglect. With Samsung phones you can uninstall quite a bit of bloat with simple means, rest with adb. Then go to dev settings and setting animation scale to 0,5 instead of 1. And obviously remove permissions, perhaps activate data saver mode (stops automatic updating), disable auto sync, disable Google auto-update. And once you do this, even low end A series phone should feel quite fast. The era of truly slow phones pretty much ended in 2014, when Samsung got rid of awful Ace series and lower with 32 bit chips. In this case A30 has all necessities to be reasonably quick and to not feel any slower even than flagships in tasks, that aren't gaming or some hardcore editing.
You can see it for yourself:
Only eMMC phone (A1x series) stood out as really slow in anything loading related, but it still remained generally smooth (minus gaming). The difference between A5x series and S series is really small. In 95% tasks it's identical, meanwhile at game loading, you can sometimes notice a small difference in loading speed due to lesser CPU and perhaps older UFS version. Even in gaming difference in fps is small. Unless you shop for less than 150 Euro budget phone, nowadays it's almost impossible to find a slow new phone. Add some of my software optimizations and boom it's faster than neglected S series.
However, Exynos chips are better to be avoided for other reasons, mostly for inferior camera processing and perhaps less than ideal power usage on higher end chips. I personally only used lower end Exynos chips and they have been fine and not nearly as poor as high end ones. I also noticed that truly low end phones like A01 have superior camera quality, due to cutting out crappy Samsung post-processing, that Samsung put in their every single device. I hate it, but Samsung insists and keeps it, yet doesn't meaningfully improve it or fix it. Despite lower end sensor, I wouldn't be surprised that even A01 would sometimes beat A52 in camera test.