I can understand privacy concerns, but I feel like it's inevitable that LLMs will be used to make lots of decisions, some possibly important, so wouldn't you want some content included in its training? For instance, would you want an LLM to be ignorant of FOSS because all the FOSS sites blocked it, and then a child asks an LLM for advice on software and gets recommended Microsoft and Apple products only?
I had a point by point response, but I don't think perpetuating this discussion is productive, so I'll just leave you with the friendly advice that adopting a judgmental, nearly religious fundamentalist, and authoritarian approach to FOSS feels like it violates the spirit of FOSS itself and will likely be off-putting to even other FOSS enthusiasts, much less anyone you want to convince.
But I feel like land for cows is akin to food we eat because we eat a lot of those cows also.
First, it's important to know what material you're cutting because you don't want to release any harmful gases or dust.
You usually want the focus to reflect an accurate distance for the height of the material you're cutting. You can test minor adjustments if you have sample material to get the best results at the same heigh before cutting the final material.