First of all: If you are classified as a SINGER, you need to be able to sing in at least a tolerable manner.
Furthermore, to measure an "artist", you have to start with talent. For example, let's use someone who can dance extremely well AKA perform, produces good material, but lacks substantial vocal ability. Most stans would argue that this "artist" is one of great caliber and that they sell out arenas etc. But in music, vocals are incorporated...so if you have to rely on studio mechanics in order to sound decent then I don't consider you so much of an artist. and it's not about being a powerhouse...it's about being well-rounded. as an artist, you NEED to be talented. To say that vocals aren't important is laughable because they are what market the artist before anything else. even though people don't think of it as such today. you could ask ANYONE out on the street would they buy music that had the artist sounding bad? No. That's why artists who lack vocal ability are put through the magic of the studio in order to at least get the public's attention past that and try to place focus on the sound and that person's performance. but I digress.
