it buy us enough time to find another solution, which is maybe better than blockstream and the sidechain thing, like we have found the segwit solution
so no, it can solve the problem
You don't know the definition of 'solving' in technology. What this is doing is postponing the problem (for a very short time period), ergo not a solution. Don't post further nonsense.
no, only you see no-sense everywhere, how you can be sure that it will only postpone it and not resolve it, only because segwit was temporary?
we can find another better solution if enough time is given
also go read about the possible issue for the possible hashrate dropping caused by the miners, block will be more full, as result of the average increase of the block time
https://bitcointalk.org/index.php?topic=1383716.msg14073880#msg14073880