At no point did I state that a $10 passive adapter will adapt an analog signal to a digital one.I stand partially corrected..lol. But the concern still remains that many monitors (esp even more so with newer ones) with DVI inputs might not have be able to accept analog signal through their DVI since most of the reason why monitor manufacturers would have a dvi input on their monitor in first place is to move away from vga analog signal.
Also, this adapter with its analog signal would not let you use a dvi-HDMI adapter to connect to HDMI inputs on most new monitors because HDMI is all digital signals. So this adapter still leaves a lot of concern and compatibility with newer hardwares that are mostly digital only
If all you have is a digital screen then your choices are active adapter or a cheap monitor (duh). If a DVI to HDMI adapter is the active type, it would still work with an adapter like this, but then you can just get an active VGA HDMI adapter in the first place instead.
Most racks will still have VGA KVMs, and for looking at CLI output VGA is perfectly adequate--hence why manufacturers are just putting another VGA port on a newer server. They're not going to bend over backwards for the homelab crowd who are using servers outside of their intended environment.