The is as about as silly as it gets. As an unbeliever, you are not in a position to say what the God that created you is allowed to do and what he is not allowed to do. It may be deceptive if he told you to make invalid assumptions, make some measurements, and then claim you know the age of the universe, but he did not do that. Someone else did that, and your gullible enough to believe them, so don't fuss about God deceiving you.

The Bible states "In the beginning God created the Heavens and the Earth". That's really all he needs to say for you to realize that you are deceiving yourself.

There are other scientific data points that indicate the earth is young, e.g. the earth's magnetic field, and the helium found in zircons, so while you have done a good job of deceiving yourself, please don't be offended if we don't join you your delusion.