I've heard this mentality from some Strat and LP players - the notion that the Tele and SG were "supposed to be cheaper, mass-produced guitars," and that there's no point in investing in the expensive, high-end American versions, you may as well save your pennies and get the MiM / Epiphone versions.
Granted, the SG is a far simpler construction than a properly chambered, curved-top Les Paul, but I still think it's a thing of beauty in its own right. Yes, it's got that rough-and-readiness about it through association with groups like The Who and AC/DC, and indeed some punk bands, but it's worth remembering that Cream-era Clapton and Santana's early work showed how they could really sing.