I’d say the level of waste from filament switching is a disaster. But many people are used to it which I find crazy.

It can be multiple times the weight of the actual thing you’re printing. Exactly how bad depends on the model. Here’s an extreme version:

https://www.reddit.com/r/BambuLab/comments/1jluvde/35_g_mode...

It makes one of those little color blobs every single time it changes colors.