Yes, point buy has technically been around for awhile. Rolling has always been the standard. The 'standard array' is the first option you get if you choose not to roll or your roll is bad according to the 5e phb. Or depending how you read the text, it can be twisted to be 'co standard'. But, rolling 4d6 drop the lowest is the first standard they give for detemrining stats.
Yes, really low dex in bg1 does really hurt you. But, it is possible to play. Espiicially since you get the dex gauntlets in both games (not that you know this first play through). But, dex 10 is fine.
Yeah, I combined them. I waS having fun with the numbered list.
Definitely easier in pnp for any character since you have an actual live DM to 'cater' to everyone's choice. Just like an 'overpowered'; character can be made to face tougher challenges in pnp, too.
Dont get me wrong. I'll survive the point buy. I've done before with other dnd games like NWN. It is not a literal gamebreaker for me.