Well that is really a great news, it will probably fix some problems that Bitcoin has but the problem is the implementation, lets say they already released the mainnet of lightning network and implemented it on the Bitcoin network, all wallets and exchanges should support it first for us to experience this cheaper and faster transactions and I doubt that wallets and exchanges will immediately update their service with lightning network. Just like segwit, it was released and implemented 4 months ago but still only few Bitcoin wallet/exchanges supports it.
There is some progress towards easing network congestion, but the question is whether it is too little too late. Segwit has been implemented, but there seems to be no reduction in transaction fees. I just hope that the migration to alt coins is not irreversible. There may be a certain inertia amongst crypto users to shift back to Bitcoin.
Segwit should have improved the transaction fees and transaction confirmation times, but due to lack of adaptability of the segwit many people didn't feel the difference about it.