Hi there,
why are you complaining about /e/ and not about the USA phone carriers AT&T, T-Mobile, Verizon & Co.?
These phone carriers and Samsung are responsible for distributing different Samsung models with the same name but different chipsets in Europe and North America.
EMEA¹: Exynos Chipsets
USA, Canada China: Qualcomm Snapdragon Chipsets
¹EMEA (Economic area - Europe, Middle East, Africa)
The fact that the boot loaders of the North American Samsung devices are locked, i.e. do not allow any changes to the operating system, is also the responsibility of the phone carriers AT&T, T-Mobile, Verizon & Co. American carriers first - that is the motto! And that everything has nothing to do with /e/ (!)
Samsung Galaxy S7 (USA) models are: G930A (AT&T, Cricket), G930P (Sprint, Boost, Virgin Mobile), G930V (Verizon), G930T (T-Mobile, Metro PCS), G930R (US Cellular), G930U (Unlock model)
Samsung Galaxy S8 (USA) models are: G950U (USA Unlocked), G950A (AT&T), G950P (Sprint), G950T (T-Mobile), G950V (Verizon), G950R4 (US Cellular), G950W (Canada), G950S/G950K/G950L (South Korea), G9500 (China)
Samsung Galaxy S9 (USA) models are: SM-G960 U, SM-G960 U1, SM-G960 W, SM-G960 0, SM-G960 8
You can buy an ¹EMEA phone in online shops, but you have to expect higher costs due to the USA import regulations, customs & co. as well as shipping. The working time for flashing with /e/ OS will cost less than the due Amarican import fees. If you need more assistance, please write me a PN 