I'll give you a fact acfter I checked :
No one said in french (quote from Dark_Ansem)
"Swen knows by heart the BG system".
It says "We have big fans, whose Swen himself, that knows by heart the world of Baldur's Gate".
(world in not really the word, in french it's "univers" but universe in EN is not really the same, we can translate by "lore", but certainly not by system or mecanics)
This is correct.
But the OP is unfortunately NOT.
The Lead Designer HAS played BG2, but admits at the time of it's release he was more of a Final Fantasy player.
He admits he prefers Turn Based over RTwP, because RTwP is messy AND IT IS, whether you like it or not, it IS messy.
Could Larian have put effort into refining a RTwP model, sure. We could argue that. That would be fair. Larian decided not to go that route but rather refince their TB system for which they were known, allowing the, to pour more time and effort into other things. Time will tell if that suffices or if the RTwp vs TB remains for many a deal breaker.
But let us not descend into making false claims against employees of Larian!! This is an unnecesary thread. The article could have been pasted into the existing debate on the two combat systems.
