Zardnaar
Legend
A lot of time, the advice I see is white room theory or pushing something really hard on a 1% or so difference or mostly a matter of preference. Sometimes though, it does feels spot on.
Overall though, I find my own experience with something is the best teacher - discovering what I like and don't like rather than just blindly following someone else's advice. While D&D is a game, sometimes the best move isn't the most optimal one or may be too circumstantial to work/not work depending on how the group works and what the DM is running.
White room theory crafting also makes some weird assumptions.
PCs might be maximizing accuracy over damage (or both 5.0 -5/+10 feats). Or spell DCs. Or party synergy often after the fact.
Alot of its also high level. See simulacrums broken!!! Game ended 10 levels earlier. More simulacrum+wish is the problem.