This page, https://www.sweethome3d.com/import-models, says "You can download the full version of Sweet Home 3D with a library that includes over 10,000 3D models and 400 textures already included". However I tried downloading the full amd64 version from the link provided, as well as installing off Flathub, and neither version contains more than a couple dozen furniture models.
Is this a bug?
Also, the image shown on that page has a UI that looks nothing like the latest downloaded version, despite checking it was version 7.5. Here's what my latest looks like: https://i.postimg.cc/2jZSrw1m/image.png. Seems like something is broken with this app.