Thunder typical leaving clan posts always bring one or two people who, just say bye and not care etc. Take them like a grain of salt, don't take the comments to the heart.
Sure look back when I was an BF admin and we brought out the BFBC2 server. I remember you approached delighted that XI had a BF game that your PC could handle at the time. You then played on the server for some time, I think we even got your application through from BF admins
Look at the end of the day ignore the recent backlash on this topic directed towards you, From your comments you have been going through some personal issues and family grievances.
My advice to you due to your comments is to take a break from the XI website or servers, you don't have to leave the clan. You can take a long break from the clan, your membership will stay valid for several months.
You shouldn't be deciding to leave the clan due to someone who wants to join wont join because you are in the clan. Man up the fuck and just ignore him, that's his own issue not yours to be stressing about man