The point is that the spell Ornithopter existed for a limited time
And it only had the name Ornithopter
Twinning Glass specifically talks about a card with the same name as "a spell that was cast this turn." The permanent Ornithopter isn't the same object as the spell that turned into it, so changing what the permanent's name is doesn't change what the spell's name was
The only card with vaguely similar memory rulings is Mana Maze, but it has this confusing ruling:
> If a spell’s color was changed while on the stack, use the color at the time it was when you started announcement, not as it currently is on the stack or as it was at the time it resolved.
It's not even that similar if I'm honest, but it doesn't say it counts the colour as it was cast. The only confusion is when it's on the stack, which makes sense as it changes what's legal for casting.
@AncientSwordRage It really does say that it counts the color as the spell was cast
@AncientSwordRage Consider the context: Spy Kit was printed in one of the Conspiracy sets, along with Conspiracy type cards, many of which have you name a specific card and buff creatures with that name.