i don't think rtwp is either needed or inherently better by itself, it was useful in bg/nwn to hide autoattacks from player allowing me to focus on few spellcasters that actually required my attention, with all auto stuff happening in background
my problem with bg3 is that it feels like a dos game with core mechanics replaced with dnd rules - except dos core mechanics had huge emphasis on each of your own turns, and these 20 hours of lvl 4 dnd just mostly don't
there're ways to achieve what rtwp did while still remaining turn based: fixing ai getting stuck is a start, making ai not instantly target your wizard would help, getting to higher levels quicker, switching encounter design from "horde of simple enemies" to "few powerful enemies", expanding party from 4 to 6 - all would help turning focus away from "watching autoattacks". or just an option like in other turn based games without emphasis on each turn: skip or greatly speed up animation - this way gameplay shifts to more of a back-and-forth level