Is this carrying company casual dress policy too far?

The company I work for has three levels of casual dress, depending on who may be visiting. The most restrictive level permits only the wearing of jeans. Next up, you can also wear sneakers. Finally, they break down all the barriers and permit you to also wear a T shirt.

I find this all kind of silly and have devised a way of passive aggressively protesting. I bought a T shirt with a tuxedo printed on it for wearing on those days that we are permitted to wear T shirts. I also wear sneakers but regular pants instead of jeans. I don’t know if anybody else gets the joke, but I think it is a hoot.

Have you ever heard of such a multi-level casual dress policy?