Lightning is hard and far from perfect... Just like every other solution, it has tradeoffs. I don't know the stats, but lightning gets a LOT of use, so I don't know why anyone would say it's useless.
Financial sovereignty is hard, and no it's not cheap. For 99.99% of people using Bitcoin does require some amount of trust... Very few can actually verify all the open source tech they are using, it's about limiting that trust in comparison to other monetary solutions.
A poor person, who you are clearly very concerned about, can't use any crypto without internet access... So should we all just pack up and go home? Internet is expensive after all, way more expensive than opening a lighting channel.