I can see both sides of this, I was one of those people with arthritic shaky hands who was positive that I could never ever rebuild. I said I was not interested but after a few months of reading posts from people who were trying to help, not badger, someone new to rebuilding I began to think maybe I could after all. Rebuilding is scary when you have never done it but it would be a shame for someone like me to give up and not ever mention it to them again.
It would be wise for someone with hand and vision issues to keep an open mind because I know some people with serious issues who have found out that they really can do it, including myself. The people who encouraged me to try were doing just that, encouraging and at the same time offering helpful tips to make it easier to do, like a simple jig that was sent free of charge with several already made coils and really easy picture step by step instructions. There are also other people who will go out of their way to make coils for others who can't or are afraid to try, who only charge postage.
I'm not saying that there aren't people who really can't make a coil but I am saying that there are good people who are more than happy to help in that circumstance for someone who really would like to be able to use an RDA or RBA.
I thought I knew my own hands and their limitations, but I was wrong, I'm glad that there were really nice people to encourage me to try.