I don't get that at all. There’s just as much technology involved in a passive bass as there is an active one. Possibly even more since it doesn’t have the relative ease of more modern electronics circuits (note: transducers, inductors, filters, mag pickups, etc. are all old tech dating back to the first decade of the 1900s) to compensate for any of its shortcomings.
So exotic magnets and string alloy formulations and so on are the norm. Even the wood is sourced from places all over the world, kiln dried under carefully regulated conditions by industrial machiney, tooled with computer controlled milling machines…it goes on and on. There’s nothing “natural” about a bass guitar. It’s a human invention that’s been refined and improved over the little under a hundred or so years it’s existed. They aren’t grown or harvested. They need to be built. Every stage has been crafted with the intent to produce a specific result. And there’s no “honesty” in a physical artifact. Honesty is a human attribute.
Any honesty, magic, or romance surrounding a musical instrument all come from the player. Without the player a bass is just an assemblage of woods, wires, plastics, and metals. So while there can be something you could call “honestly in music,” I think its really all the result of a commitment on the part of the player. and has nothing to do with the instrument any more than “an honest piece of art” can be attributed to the tools used to produce it.
You can be “honest” and “organic” and “pure” with an active bass just as readily as you can be with a passive or acoustic instrument. Because these things are just tools. They’re not the artist’s vision, intent, or execution.
To my mind, the only genuinely honest or true instrument we can possibly play is our own individual voices.