I don't see it a problem for me personally either, since the chance of actually selling any image I ever make is close to zero. But I can see that for others it's a potential problem.

In fact I have another query about these models. They look to be excellent, but since they were made with Xfrog, and being an Xfrog user myself, I wonder about the poly count. My own experience is that Xfrog produces very high poly models, and scattering a lof of them over the landscape could cause a problem. Not for Vue, thanks to ecosystems, or to something like Vray with its proxies, but in other 3D apps. Presumably Walli has access to Xtune, which I don't, but it might be helpful to publish the poly counts on the web site for prospective users.

Steve