Heat from incandescent bulbs isn't a problem in home use, but together they add up to quite a bit of current, and if the crummy IDCs* they used decide they are corroded enough to act up, the connection becomes resistive, which makes it need to dissipate heat, which makes it more resistive in a vicious cycle until you wind up with melting connectors and overheated board headers. Happened to me when I left Rudy on overnight by accident.
I still left my GI incandescent, though, once I put in a trifurcon connector to fix it it should be bulletproof. If you ever notice your GI seems dimmer than it used to be, FFS check out those IDCs! You may save some board work JIT!
*Insulation Displacement Connectors. I refuse to call them IDC connectors.