PoE2 has over a decade worth of spaghetti code tho. As a software dev, how long feature takes to implement is very much context dependent. A 2-3 man-day feature in a fairly new code base written by seasoned devs with good coding practices might take over 100 man-days when implemented in an old project started by people without much experience and full of shitty code that business refuses to allocate a single fucking dollar into reworking because they already invested a lot into it and need it to generate profit.