That's a big number of address and too much to hold if its only one person. There might be a group of people who continues to work, or the worst thing is that those are scammers address which is very common for them to have more bitcoin addresses. I don't have 1BTC as of now but I do only have 3 BTC address just to make sure my money is safe but never to make a hundred of addresses, its hard to manage honestly.