The biggest concern with these come from the fact that it’s hard to decontaminate 3d printed stuff due to the texture, as far as I can tell? PLA, and PETG are food safe, but 3d printing does leave a texture that’s hard to fully clean, which can cause problems over time.

For microplastics: You’re getting a lot from a lot of sources, and as with anything it’s an “Is the risk worth the benefit” situation