Thus, people who consider the Smashing Pumpkins to be worthy of attention, may well agree with your estimation of Slint. Those who take the opposing view may choose otherwise.
But I still don't understand why. Smashing Pumpkins (aside from
Gish) are a mainstream rock band. What does the fact that I think they had some redeeming songs have to do with Slint? If you want even more context, I haven't listened to a Smashing Pumpkins album, or even owned one, for nearly a decade (aside from downloading
Gish the other day). Until a few weeks ago, I probably hadn't intentionally listened to anything from
Mellon Collie since 1995.
If that still counts as me thinking them "worthy of attention", uh, okay.
I think I just have a much more open mind for music than most people. It's not even as intellectual as thinking something is "worthy" of attention. It's just a matter of forming opinions on music I have heard.
I just am not a fan of judging someone's opinion of one thing based on what they think about another thing. I have a friend who likes Mindless Self Indulgence; he also likes Joy Division. I don't think that his appreciation for one band I think is terrible affects his judgement on another, completely different band.
I'm pretty sure it's an oversimplification to say "If you and someone else like X then you'll probably agree on Y." Gregs said
Adore is a great album yet also loves
Spiderland, right?
I don't know, maybe things are different in your social circle or age bracket or whatever, but everyone I know that I talk about music with in real life has an unique perspective on every band; it never comes up to say "Well, since you like this band I consider crappy, I think your opinion on this totally different band carries less weight."
It'd be one thing if I said something like "Tool are better than Slint", since there are definite similarities between those bands. If someone said that, I'd be a little suspect of their taste. But this whole thing sounds an awful lot like you're pulling the old "Stones or Beatles" nonsense.
In conclusion: Apples and oranges, man.