Anyone can rewrite stuff. Or write additional stuff. If you have 'well they are this, or they could be this' and you dont like/want either option then what?
One option --> if you don't like it, rewrite.
Two options --> if you don't like, rewrite. Same as above, only there will be a greater chance that you'll like one of the options.
Not at all. I have my own view on things that I iterate on all the time.
You say that, but...
Fizban's is great for example, because it TELLS YOU what these various Dragon types are like, what they value, where they set up, and how they function.
You can then tweak it, ditch it, or use it.
"Maybe the yeti are hungry, or they may just be mean, or maybe there are 2 kinds." doesnt do that.
You could tweak, ditch, or use the "maybe this, maybe that, maybe both" options. You just don't want to. However, you're perfectly fine with
other people having to tweak, ditch, or use a single option.
With the yeti (for those who are not Scribe and reading this and are confused, this is a reference to the yeti as presented in Level Up), there were a couple of options, IIRC: yeti are generally cruel and evil, yeti are generally peaceful unless hungry, yeti are generally peaceful except during blizzards.
You want the yeti to be evil, because of reasons? That's covered. You want the yeti to
not be evil, but to still be dangerous? That's covered? You want the yeti to not be evil but to still be dangerous because powerful evil entities of ice and snow, like Auril or Thrym or an archfey or Ithaqua drives them to madness and violence by sending out psychic calls during blizzards? That's covered.
Seriously, though. How is
not having a choice better than having a choice?
The difference is, you can have 'well it could be this, or that, or maybe this' or you can have something definitive. I'll take difinitive any time, because at least then you have something to ignore/change/add to.
Some undefined nebulous fluff, is pointless. Its not 'providing options' its refusing to say anything about X, that can then be either reviewed or extrapolated upon, just for the sake of being as inoffensive and safe and 'bleh' as possible.
So
your belief is that, by having monsters as not just being evilevilevil so you can kill them, that means they're inoffensive and safe and bleh. Gotcha. You know, if you prefer black-and-white morality and guilt-free murderhoboing, just say so. That's fine. You can game like that all you like. But why force the rest of us to game the same way?