This is not a hack. These are standard parameters transmitted with every connection request. Any website you visit receives this data automatically.
Your current route passes through your ISP before reaching any destination. Every request is visible to your provider. Alternative routing via encrypted tunnel removes this exposure and can improve stability on congested routes.
A VPN is not magic — it's a tool. It shifts what your provider can see. Whether you need it depends on your threat model and how you use the internet.