Is that sentence meant to have a meaning or did you just paraphrase mine and trust your luck?
Several, actually. First, that you should stop licking her boots or other bodyparts where you could be construed as under, since it's been over a decade since she was doing anything memorable. Second, that perhaps she's still important in the circles you move in and it would behoove you to come forward into the modern era. Third, she's dead, and judging by your reaction to general "so what" you're going to be a pallbearer at her funeral. (Nice work reinforcing that impression with this post, by the way.)
As Starslayer pointed out quite eloquently, like her or not she was a very talented vocalist, so I don't know why you're persisting in this exercise in digging a deeper hole for yourself. If you didn't know who she was that simply meant you'd be ignorant of pop culture to a certain degree, but to claim you don't remember a single song by someone who topped the charts in your country for 14 weeks when you were at an age you should have remembered it, but do know all about her and her career, suggests a memory problem.
I know about her career because there's this thing called a newspaper and I have a good memory for things I've read. I don't know about her singing because...
Actually I daresay because I simply didn't give a **** when I heard it. I was born in '85, at my age for most of her career interest in love songs is pretty minimal. By the time I was old enough to care about her music she was in the midst of breakdown, so learning about her was easy, but her music wasn't played very much.
Also, you have this weird conception that people will even necessarily hear music that tops the charts for 14 weeks. (Which charts?) It's actually quite untrue, as I've discovered via the fact one of my radio station presets for the car plays the American Top 40 on Sundays. Charts track sales, not what is played on the radio or in public spaces. There is in fact a disconnect between the two that's quite noticeable.
And that's before we get to the rather ridiculousness of your claiming that someone who was primarily famous as a singer with a reputation based almost entirely on her 80's and 90's hits sang songs that are forgettable.
Sing Elvis. No, go on, do it. I could ask you to do the same for a half-dozen other singers or bands that have been famous, if you like. (What, you don't remember Tina Turner? YOU JACKASS! Charlotte Church! UNCULTURED BARBARIAN!) Whitney was a genre singer about love and heartbreak and the one-woman-wail. That makes her entirely forgettable to numerous segments of the population who just don't give a **** for her themes, her messages, her voice, her style of music, and about twenty-five other things. (I would probably hit at least two of those, for extra-not-giving-a-****.)
EDIT: I just find it amusing that Karaj is getting so amazingly

about this to make such stupid pronouncements as he has.