It's been known that ND haven't been doing anything with GOOL or GOAL since the end of the Jak & Daxter era, around the time that Andy Gavin left. But the programmers there were still using Racket to generate data, scripts, and glue code for their new engine well into the era of TLOU. My conspiracy theory regarding TLOU's third remaster/rerelease is that it happened in significant part because they wanted to get rid of the Racket bits so that they could focus on hiring average developers from a large talent pool to execute on Druckmann's auteur-wannabe vision. Retconning Ellie to not look like Elliot Page and promotion for the HBO series were also factors, but I think the focus at ND has changed to becoming Yet Another Generic Game Studio, and managing the TLOU IP.