No it is not.

Polaris is still exactly where it should be.
If the planet's tilt had changed, the axis would no longer point close to Polaris.
I polar-aligned my telescope by the Kochab-clock method only two nights ago.
(The K-C method relies on the North celestial Pole being two thirds of a degree from Polaris, in the same direction as the star 'Kochab')

If the Earth's axis was 'off' by even a very small angle, I would be able to see the result - Stars etc. would drift across my field of view, especially at high magnifications.
They weren't drifting, ergo, the earth's axis is just as it should be.