You don't find it somewhat problematic that a system billed as A Peer-to-Peer Electronic Cash System can't handle the transaction volume generated by a small suburban shopping mall?
Finding something problematic and saying that it is a fundamental flaw is fundamentally different.
You don't consider it a problem that "the next world currency" can't come up with a coherent scaling roadmap which doesn't involve third parties & what amounts to buying gift cards from people you plan to do business with (lightning network)?
The Lightning Network does not involve third parties nor buying any kind of gift cards.