I totally understand the need for a provider to decide on what level of screening they feel necessary to make them safe. Likewise, a hobbyist should decide if they are willing to take a chance, or find someone else.... as stated earlier, the free market will provide acceptable balance to both supply and demand sides.
BUT for the providers that think the hobbyists are overreacting, or the hobbyist quick to spill lots of personal info, the following is true....
I was once asked for JUST a full name and town, that was all, plus the promise to quickly flash any ID that matched later. I figured better then a phone #, plus my info was unlisted, so I really thought this was really minimally invasive. I ended up becoming friendly with the provider, and later asked how on earth that was any kind of safety net. My new friend laughed, and proceeded to tell me my SS#, my DOB, my unlisted home # and address, my SO's name, SS#, and DOB...... need I continue?
After my shock was over, using my infinite charm, I found out how, and was clearly not thrilled, but that ship had sailed.
I truly doubt that info was really ever discarded, despite being told otherwise, and although I consider her a friend to this day, the risk to me, was clearly not worth it.
Had the provider not been a great person, I would have been vulnerable to a lot of nasty stuff that was WAY above my level of acceptability.
I shared this because, as pointed out earlier, there have been plenty of public disclosures, including a recent southern senator.
So for the providers out there, I think most here respect your needs to be safe, but it definitely cuts both ways... and it is not just being overly paranoid to have an issue with screening....