My understanding of the data protection act is that unless you have given permission they cannot store personal data about you. Therefore, they should no longer be able to identify you to know that you are still banned.I got banned from 'Red' fairly early on by stating that Low Carb was not the only way to go, IMHO there were other less drastic ways of dealing with T2 depending on how much change a person's diet actually needed ..... Ooops. I'm still banned, tried re registering there a few times when I've wondered what it's like these days but as soon as I enter my email address it tells me again 'You're banned!'
No loss as far as I'm concerned.
When I was banned, I requested all my data was removed. I can now return if I desired.
As you say, no great loss though.