The repo owner
pooler hasn't used github for 2 years but it wasn't removed from eXch's recommendation. It's reassuring they've decided it's safe.
It hasn't been updated for 2.5 years, that's not necessarily the same as not being supported. I still use Electrum-LTC (in a VM, of course), and it works fine. But I only use it for small amounts, like any other hot wallet. Or you can use it with a hardware wallet.