First of all I have not bought a copy of Dragon since probably 1993.
I did however, buy the Fiend Folio and Unearthed Arcana back when they came out and I know for a fact that there were NO good Drow to begin with.
Did said issue of Dragon magazine (#298 I believe) come out BEFORE or AFTER Mr RA Salvatore's Drizzt character? AFTER!
Therefore those "good and otherwise" drow articles are there purely to assuage the Drizzt wannabes who have no imagination and simply cannot fathom the idea of not playing Drizzt.