I like playing zoomed out completely so I can see things I normally wouldn't be able too, especially if the plunger jump is messed up in 9.

This is not against the rules on the leaderboards, although it does feel a little cheaty and I don't see any other runs playing like this.

Any clarification on if this is allowed or not?

This is not allowed as far as I'm concerned, we've talked with mods about zooming out and they said runs like that won't be accepted on the leaderboards.

There's another flash game called "Duck Life" that bans this exact thing. It should probably be added to the rules if it abuses flash window sizing.

This has been added to the game rules.