Not at all. Simply that if you have had some previous contamination, this might help clear up the problem. I said it was anecdotal but as it worked for my fathe

Not at all. Simply that if you have had some previous contamination, this might help clear up the problem. I said it was anecdotal but as it worked for my father, it might work for you. Why would I want to convince anyone to follow this regime? It is there for you to make a judgement call and do your own research into the matter. If it helps just one other person then it was useful. If you are not at all interested then don't investigate. That is entirely up to you. I actually find it funny that when any kind of suggestion is made that might (notice the use of the word "might") help with some pre-existing condition, people make the immediate assumption that the person making the suggestion is then advocating to continue the activity that caused the pre-existing condition. In today's atmosphere, it almost appears that people have stopped trying to think for themselves. All I can suggest it that people stop jumping to conclusions and if something is unclear then ask some questions. Sure, there are people who are "trolls" (so to speak). But there are also many who are not. Just yesterday, I came across a youtube comment that, in the context it was written it was meant to be sarcastic, was treated as if the the person making the comment was supporting what they were not. Essentially, there were only two of us who recognised the sarcasm, the other participants essentially treated the person as if they were an idiot. Go figure. As far as soldering with non-lead based solder is concerned, it has been a good source for my son-in-law's repair business. The most common source of problems he has found has been the solder joints failing because of non-lead solder. He has also received quite a bit of equipment that was essentially being thrown out because of some unknown failure, which he often found boiled down again to faulty solder joints due to non-lead solder. Is this an advocation for using lead solder? No. It is simply recognising that the processes for using non-lead solder will be a bit different. There are always consequences for changing to using different materials if the former are found to have health problems. However, I have seen that people don't always take that a change in processes is also required and so we get other problems arising. At any rate, during this time of isolation, everyone keep safe and take the necessary precautions for the health of you and your loved ones.