> Is this a hallucination? What am I missing? Why would heavy reads generate writes?

I take it heavy reads means more stuff goes into RAM, meaning other stuff has to be cached?

I've got same question as GP: e.g. is there a way to set moderately fast consumer NVMe SSDs (I've got both a Samsung 990 Pro and a WD SN850X) in a complete read-only mode to prevent "wear"?