Oberon also has multiple RETURN statements. Only the latest Oberon-07 version does not. So before 2007 Oberon always had multiple RETURNs.
And these keywords can be said to be "screaming" only by a person who does not understand what a "habbit" is. People get used to "screaming" keywords very quickly. And turns out, the uppercase keywords are more practical. Typing them does not take more time than typing curly braces all the time in other languges (you also need to press SHIFT for that, you know). The big keywords allow visual separation of syntax sections, that Go lacks so much.
I.e. in Go, when you see a for-loop, it may not actually be a for-loop, but a while or a foreach loop -- to find out, you need to count the semicolons in the line.
And these keywords can be said to be "screaming" only by a person who does not understand what a "habbit" is. People get used to "screaming" keywords very quickly. And turns out, the uppercase keywords are more practical. Typing them does not take more time than typing curly braces all the time in other languges (you also need to press SHIFT for that, you know). The big keywords allow visual separation of syntax sections, that Go lacks so much. I.e. in Go, when you see a for-loop, it may not actually be a for-loop, but a while or a foreach loop -- to find out, you need to count the semicolons in the line.