That makes a great deal of sense.

I'll buy that.
And I think that's about as much as we will get in terms of info. from the presence or absence of feet.
The jug you show above is a Boffo piece.
I have a footed MDG globe vase, and chimney vase.
Mdina chimney vases are all footed.
I've had my amethyst seaweed down and I now feel the strapping is not really complex and good enough for MH. Unless he was having a bad day! But my clear, shorter unfooted one has not got really good strapping either, far too much just "around and around".
The jury is out.
We need to get a vast collection of "seaweed" cylinders together, get ourselves together with them and spend some time studying them.
I can dream.

Going back to Anton's bowl. I know there is blue in it, but the base colour of the clear glass still looks fairly "blue-ish". It's not the yellow of the milk bottle cullet.
So, it was made at a time when they did have access to better cullet.