This has been discussed a bit, and it seems anyone I ask agrees with it. His major builds like Tranquility can certainly become public-owned villages for anyone to enjoy.
For anyone interested, there is also a monument/memorial for him in Qualia, with a ground section and an island in the sky that features part of one of his mushroom house builds, plus a statue dedicated to him. Visit it any time at /warp Theo, or find it in the hills of Qualia. Look for the mushrooms!