What? You can download a lightning wallet right now and I can send you sats without you having to fund anything or even provide any personal information.
Yes, that makes it a closed system, but it was never realistic to have every single person on earth access bitcoin via on-chain transactions.
You should fund a LN channel for more than one transaction because you cannot change the channel funds after creation, so you better make sure enough is in it. This makes it unsuitable for things that require more than a tiny fraction of your monthly income, e.g. rent.
LN channels also need to be constantly monitored to not get scammed, which the LN whitepaper suggests you to pay third parties for.
The LN whitepaper completely obmits the routing problem, too. It more or less says "we don't want to think about that now". A network whitepaper that doesn't think about routing, imagine that.