No, I'm afraid not. There is still a ton of stuff we don't know anything about, the Czech factories were working full out and doing all sorts of interesting and experimental things, we still need to find out about.
They had financial resources, they could do lots of experimentation.
There are really complex pressed pieces we still cannot identify - moulds are expensive, complicated and difficult things to make, but they could afford to make them and sometimes not even end up using them much.

That's why I'm thinking Bohemian. If they were trying to mass produce something complex, such as ariel, it could easily come out as a bit "off" as you say.
I have had a large bucket in a very strange browny sort of amethyst shade, (all a bit varied in depth too!) engraved with dragonflies. It too, was in some way a little "off", but purely, I think, from the matter of mass producing something difficult or labour intensive.
The etching/cutting was unique, in being hand done, but done from master patterns. Mitre cuts here, a few rondels there, assemble into basic dragonfly shape. (I've seen pattern books that show how to assemble insects and foliage from certain cuts.) So anybody could have done them, it didn't have to be an artist.
This vase of yours is really, really reminding me of that bucket, which I ended up assuming to be Czech/Bohemian.
ps. I don't think you were being contentious, it's just the way the written word can come over, sometimes.
The Glass Staircase doesn't know how much or how little you know and was only trying to help a newbie with some basics.

I can see where you're coming from with the price you and the seller both did agree on. A Keith Murray premium would not have been appropriate.
But it is a lovely and interesting thing to have.
pps. I've got some pics of my dragonfly bucket.