Singer's Voices: Do they matter? I'm gonna say no.
1. I don't think we can agree on who has a bad or good voice. I like Aretha Franklin, Ray Charles, Elvis Presley, Sam Cooke, John Lennon, and Marvin Gaye, but someone will disagree. Pat Benatar was an opera singer, but someone will reply that she has a bad voice. Some people may not like Mariah Carey although she used to have a huge range. I think Whitney Houston had a good voice, but some may not like her. Some feel that Adele's singing style is too dramatic.
2. I think the quality of the material is more important. Some singers have non-traditional voices such as Joe Cocker, Bob Dylan, Geddy Lee, Axl Rose, Tom Waits, and Neil Young, but they're very popular. I like Dylan, Young, and Lee's singing, but I admit they're no opera singers. Rolling Stone has Dylan ranked as the seventh best singer of all time. Someone will reply that they all have good voices.
I know this is an old thread, but I've got some thoughts.
The timbre of a singer's voice can be what reels a fan in first, though not always. I would say that Belinda Carlisle partly due to that. Kacey Musgraves almost all due to that. And from opera, Judith Blegen has the best "Susanna" out of the Figaro recording, but the conductor, Daniel Barenboim, made the music souless and lifeless.
Another way of "activating" fandom is through compositional/songwriting talents; this is what made me like Mariah Carey and Jojo(Joanna Levesque). These ladies have the ability to modify the melodic line while complete preserving the character of the song. It is also evident they have the "internal calibration" present in the legends of the past, like Beethoven or Mozart.
But Mariah's voice actually has a characteristic Belinda Carlisle has. This growly, a little crack rock-like "crack" or "growl" that absolutely pleases my ears.
1:07, 1:56, 3:02, 3:06 in Heaven is a place on Earth
1:20, 2:08, 2:32, 3:06, 3:15, 3:23
On the other side, hearing Billie Eilish can only be politely described by me as an allergic reaction. She makes me feel unwell and "bad guy" is only tolerable because of the backing tracking. She can sing, but I cannot handle her voice. It's not the style or whatever of music, it's the sound itself I cannot stand
And sometimes, listening to new music from new singers makes you appreciate something else distant from their acts. To make this point make sense, my personal experience is with Mozart's Clarinet Concerto, Mariah Carey and Jojo. Upon listening to the concerto after hearing Mariah, it started to dawn on my that the Clarinet sure was doing "Mariahisms", but in the language of 18th century music and the tone sure had some distant similarities. Combined with listening to an actually good recording by Sabine Meyer, it made me realize....Mozart had singing chops that he merely translated to instrumental music. And Mariah has that "intuition" he had...
The Clarinet Concerto was not in my circle of super duper Mozart "loves" for most of my life. But now? It is, and hell, I named a fantasy football team "Mozart foreshadowed Mariah", lol....
There's also sex appeal/charisma. For the most part, this doesn't do it for me, but Camila Cabello's conduct reeled me in on an old James Corden clip. The "twigs and berry" influence my thoughts on her for sure. She can sing, but let's say its not a strictly intellectual or emotional fandom like the singers above for me.