I mean you can continue making excuses but it doesn't change the fact that this "simple" tech update is just taking too long.No. They haven't. The average AAA game takes 3-5 years (remember, Cyberpunk 2077 took over 8 and it was a fucking mess on release) and hundreds of staff, as well as hundreds of millions of dollars to produce. While the tech update has taken much longer than expected - there is no need for hyperbole and made up information to support that fact.
Everything else in your comment makes sense.
Average AAA hourly wage is $50-$60 USD (based upon $100k-$120k annual salary). While you may be correct that a couple of the people on staff might get paid that much (DC being one) - just like the person above, there's no need to exaggerate or use false assumptions to make the case that this tech update has taken a long time, longer than anyone expected.
There's a wiki that has a walkthrough (link in OP). There's a dedicated thread on F95 for walkthrough and help tips (link in OP).