Bitcoin's Lightning Network is definitely not an option. Especially when you need to pay a high on-chain fee to open/close a channel. The LN is limited to the main chain's transaction capacity. I don't get why developers keep focusing on L2 instead of what matters most.
Because L2 doesn't end with Lightning. It's also the gateway to the next layers and the things that can be built there. It's "big picture" stuff, but people are only looking at what they can see now. Try not to cast a final judgement when you haven't seen the final product yet.