The idea is, are you basically a good Drow or evil Drow?
Honnestly this is nearly my only problem related to this thread. Should our races and subraces choice influence our "alignement" and how the world react ? According to me : no. A drow is a drow and good actions should lead to good reactions.
Drow are a 'villain' race, that exist to be something players can fight/kill without any pretense of morality. They';re known for worshipping an evil goddess that has them do evil things, spiders, matriarchy and being really evil; Lloth specifically blesses her followers with red eyes to mark them as 'hers'. If you play a good drow in BG3 you can specifically reference this when the character talks to some tiefling children, warning them to run if they see drow with red eyes. Is that racist? It's a snap judgement based on the colour of a drow's eyes, but this is also a race that has a
very justified reputation. Even if you try to be good amongst Lloth's drow (and are caught) it... will not end well for you. Best case scenario, you're quickly killed.
This entire thing is because (I suspect, I'm not up to date on details) people and WoTC got fed up with drizzt (himself a massive outlier) clones, and made an entire group of not-evil drow for people to stop contradicting the canon.
