This is why bitcoin sucks as money, and it's kind of hard to deny if you're honest. Nobody in their right mind would switch from fiat to bitcoin.
Absolutely. Bitcoin is so impractical to be used as money especially on a daily basis and on a face to face payment. Bitcoin has its own advantage over fiat and fiat to bitcoin. We can still see that fiat is on top of bitcoin until who knows when.
The unconfirmed transactions in the mempool don't really show how Bitcoin is as money and it doesn't show any inherent problem in the network. Solutions are proposed and SegWit increases the transaction capacity. Jonald seems to think that the LN is the only part of SegWit but the LN is just a development which can happen. The network only needs an increase for now, it doesn't need such a huge increase in potential capacity as BU right now, just more than the current capacity. The LN is just a good addition which will come later.