I said "pretty much any" not "every" since we're talking about regular usage of a computer. OP didn't mention anything in particular so I suggested three alternatives. Before you start calling people out you should first define what "complex" is.
Recent Photoshop is either silver or garbage depending on the version. Premiere is listed as garbage for all versions.
Newest iTunes is bronze.
I’m not even trying to find bad examples. I’m just poking around in their public db for popular software that doesn’t exist in Linux. I’ve run into this every time I try to use wine for real — it’s never worked well. It’s also a really hard problem! You basically need to re-write Windows and all of it’s related components, which one of the worlds biggest companies has spent decades on and however many billions of dollars. But it’s not like “pretty much any” windows software will run well. It’s quite selective outside of games.
So claiming "pretty much any" windows software runs in wine, is the "very bold assumption", not backed up by reality.
Because yeah, there is a lot of windows software somewhat running ... but somewhat running is not enough, when you want to work with it.
Just because some games are running more or less stable, doesn't mean you can run complex software with it.