Interesting. you say you disagree, but actually you mostly DO agree- read your post again.
1. We were using stylus vs cartridge above in general terms, not breakdown of cantilever, coil/spring, etc.
2. the mass, density, size of the actual cartridge (not cantilever, etc) DOES matter, and this is not only common sense, and manufacturers and professionals will tell you the same.
If the mass, density, size of the cartridge does not matter, then why don't they use the same cartridge mass, density, and size ALL the time? Aluminum is diff than wood, wood is diff than resin/plastic, etc
3. Even if you say that stylus is %75 of sound from the WHOLE cartridge, you are still agreeing that the cartridge-including cantilever, coil/spring, etc- has a 25% influence- in which you are agreeing with me.
4. Of course there is going to be some same parts used in a manufacturers cartridge line up, that is just general manufacturing, almost all manufacturers do it. But if they do, they will tweak another aspect of the cartridge. eg. keep the coil, change the cantilever, or .... change the stylus, keep, the cantilever but reduce the weight of the cartridge body by 10%, and on and on.
5. Have you ever changed a stylus before? thought so. Its not like making a PB and J sandwich. Its just "a little bit" harder
. in fact, you have to have a skilled technician do this.
I love DIY, and DIY myself, but this is not something you whip out in 10 minutes
6. Well, while we're at it, why don't we add the sonic influence from matching the cartridge gain to the actual phono stage a person is using? This is a widely researched and accepted principle. IOWs, the Cartridge DOES have a large influence. And it is exactly the people that don't know this that suffer- b/c the quality of the music is largely influenced by matching gain b/w the two.
6. Dude, You don't even listen to vinyl according to your signature equipment !!! What? Maybe stick to what you know rather than speculate, bc it just misleads and misinforms others on the thread. I mean, whenever I see someone with over a couple thousand posts, more times that not, IME they spew opinions (that "I read somewhere on some forum"), NOT facts.