@amszmidt I can eschew anything (for works I distribute), but I still need to understand the effects of things I eschew :-).
A more complex response is maybe in order, though. I don't think all non-FOSS licenses are equally eschew-worthy. For example, while I'd always rather have something under a FOSS license from the start than under BUSL, still BUSL is much, much better than straight up default proprietary copyright terms.
An even more complex response is here (though only covering a subset of source-available licenses): https://opensource.org/delayed-open-source-publication