my guess is that this was targeted due to his vociferous views on how the system operates and as you have mentioned doing this by registering through his site and stating what, when and why you have been doing is a bad move.
His commentary has been spot on for many years. The system portrays him, along with others in this camp,as broken clockers-as to say it's right twice a day everyday.
Sometimes you can't secure the amounts you want in one place. Best to spread out purchases and locations. The big dealers are usually an ok place to buy. Drawback for sure but if you need it quickly it will be delivered to your door, insured and requiring a signature to release. This is the best option if you have time and do not want to deal with a local option. Sometimes that can be fickle-ala the personality of the owner. We all have our comfort level no matter what we do.
Do your own due diligence and you can't go wrong.