When you fund a channel, the Bitcoin is still yours, you're not giving it away.
With batched channel open/closes, it'll be super cheap to open and close channels. The only cost you'd pay is the opportunity cost if your counterparty isn't sending transactions, so you're not collecting routing fees. If that's the case, you can just close the channel if you need to fund another channel and don't have spare Bitcoin for it, but that's about it.
With batched channel open/closes, it'll be super cheap to open and close channels. The only cost you'd pay is the opportunity cost if your counterparty isn't sending transactions, so you're not collecting routing fees. If that's the case, you can just close the channel if you need to fund another channel and don't have spare Bitcoin for it, but that's about it.