And is it also fair to see a boom as similar to the functions of a tone arm since it has also inside of the boom wires that carry the music’s electric signal from the mic to the recording magnetic tape?Right here is where the analogy falls apart. A mic boom is simply holding the mic in the right location, but in that regard is rigid and does not have to articulate. It doesn't need much in the way of adjustments and they come in different sizes depending on application. Certainly no worries about things like effective mass, mechanical resonance 7-12Hz or the like.
I've been doing consumer electronics service since the day after I graduated from high school back in the 1970s. One time a customer came in the shop and actually wanted a magnetic cartridge installed in his VM turntable. Now some of you here might know what those are, obviously others here do not. I had to explain to him that the idea simply wouldn't work- that if he wanted that cartridge because it sounds better and would be better to his records, he was going to need a tonearm that could do the job. A VM turntable is designed for a ceramic cartridge that tracks a bit heavier than any magnetic cartridge- 5-7 grams is common. The VM arms have no provision for setting overhang, and barely anything for setting tracking weight. Now I don't know how far to push this, but it should be obvious to anyone in audio that working with an arm like that, you're simply not going to get the best out of any magnetic cartridge! Its a given.
So starting from there, we all know that correct overhang is critical to getting the sound right, so is the tracking pressure and VTA. And yet there are 'high end' tonearms that have no VTA provision; by the argument I'm seeing presented here, the conclusion we see this heading to is that VTA does not matter to any cartridge (Raul indirectly made this argument). Obviously that is false! Now having worked with a lot of arms and having built my own, I know that the arm tube resonance is a thing, even though there's no adjustment for it. It can make a big difference as to how the arm plays the mids and highs. So in any potential arm I'm looking at, I expect the arm tube to be damped in some way. A good number I see are not. Now if you can hear what that does, are we going to ignore that and just say that makes no difference whatsoever?? Most audiophiles I know don't mind a bit spending the time to set up their cartridge correctly; I am really failing to see how the cartridge can eclipse the arm in this. All my experience points to the contrary, and in spades.