I don't know why is it AWFUL?
Personally I don't want Japanese artist singing english songs with almost western accent and diction, because it takes away the Japanese feel ot it. So I hope when they sing it in english the lyrics should be understandable and still having the Japanese feel to it
Well, your Youtube link did not show the whole singing, so I can't tell how good their English is, especially Haruna. I doubt if she knows any bit. So, we have a situation here that their "Satisfaction" is unrecognizable vocally by both English and Japanese speakers, if Haruna sings in English. I like them as a band; however, not whatever they touch turns to gold. There is a limit for everything. Of course, it's just my opinion.