Okay. I've read the rest of the thread now. First, I want to say that I applaud you, OP, for researching, reading, investigating. That is never a bad thing, and is very important in something like this.
My opinion is, you should call your county and find out what animals you're zoned for.
Barring getting your own, you should go with the dairy that tests less frequently but is more friendly.
That is not who I would go with, but it is who I think you will be happier with
The email which you quoted here did not sound angry or harsh or impatient to me, but I believe you about the others. I thought it sounded very patient. To be honest (and I'm trying to be as gentle as possible, given my foot-in-mouth tendencies, I don't think you did anything wrong
), if I were her I'd be feeling a little hesitant also. Not because of the number of questions, but because you seem to be, um, very non-trusting in combination with it sounding like your questions are coming from elsewhere (and not a very good source).
I would be hesitant because I would be afraid that if you, and especially if your whole family, were to get ill from some other source like say a viral flu... that you may attempt to blame the dairy first. Because, you know, raw milk is hazardous (I'm very sorry, but objectively that is how you come across).
It wouldn't be the questions, nor the number of them, but the tone that would make me think twice.
Some of those questions come across as uneducated on the subject (but earnest, trying to become educated about this, and that's always a good thing of course) at best, and probably miseducated. That is dangerous in such a highly controversial issue.
And please accept this as the objective, nonjudgmental, nonflaming reply that is meant.
I'm just thinking of how I would feel about a potential client (as a midwife) who asked me things like whether I wash my hands or take regular showers. Or whether I, I don't know... do an APGAR assessment when the mom is 6 cm dilated? I would think hard about accepting that client because it feels like a potential lawsuit waiting to happen, you know?
Oh, and a very good reason for NOT teat-dipping after milking is if you are not overmilking with machines and inattentive or not enough attendants, and the teat dips that are effective tend to be very drying.
Here is my old milking technique:
Bring goat up to milking stand. I only had one or two goats at a time, and I kept my milking stand near my house for convenience but that is irrelevant.
After goat has put her head through, close stanchion and give her grain portion to her.
Wipe udder, belly and teats with warm water.
Wash all above mentioned areas with mild soap/warm water solution, very thoroughly.
Rinse very well with warm water.
Place impeccably sterilized, glass or stainless milking vessel under goat. Milk into it.
For my first couple of years, I religiously teat-dipped with iodine. I had a goat who got terrible mastitis (and it is no fun, as a nursing mother, injecting abx into the teat with a syringe, let me tell you).
I later gave up the teat dip, instead I gave her a good splash with good clean water and frequently I didn't even do that after milking. I never had a goat get mastitis.
Connection? Probably not. But I don't think that there is any reason, when humanely milking an animal, that teat dipping afterward is necessary.