I disagree, and stated reasons.
I could just as easily state that the "transducer" is the "necessary evil".
I maintain that the transducer is limited by the turntable, and that in real-world situations, a moderately good transducer working at maximim performance on a top-notch turntable, will outperform a top-notch cartridge working at reduced performance on a moderately good turntable.
You have given no reasons to back up your opinion, other than your opinion. I have heard your argument a million times and it has never "held water" yet.
I state that a cartridge which has more musical information properly fed into it, will outperform a more capable cartridge which has less musical information fed into it less properly. I backed up my case with reasons for my position. This would clearly place the turntable higher in the order of importance. I understand you disagree.
Tell me why.
I would totally agree with you, if your statement was "A better cartridge will sound better than a lesser cartridge, on the same turntable(so long as they match well with the tonearm)." However, when the discussion leads to the matter at hand, that is where we part company.
Regarding musical reproduction, it is understood that more recorded information getting into the system is paramount to improving the music. Correct me if I am wrong about that.
If a cartridge retrieves less musical information(or lost information, or speed corrupted information) from the recording(due to a flaw in the turntable performance), it cannot sound better. It can sound "smoother" or "flatter response", etc. but it cannot sound "better" because there is less musical information entering the system, or there is flawed musical information entering the system.
Conversely, if the cartridge retrieves more musical information from the recording(even if the cartridge is of lesser quality), it will sound better(more musical) because more of the music enters the system.
Certainly, this music can be affected by the quality of the transducer, but at least the music makes it into the system.
This is my point. A quality transducer cannot produce music that is lost or corrupted by a turntable flaw. Improving the transducer on a given turntable will improve the sound only to the degree that the turntable is capable of producing. To improve the sound further will require a better turntable. Once this point is reached, no transducer in the world will improve the music, until the turntable is improved.
Assuming that we have the best turntable in the world at present, then the arm and cartridge selected will have a chance at working at their best.