> why does nobody have the decency to simply accept Bitcoin in their local farm as payment

Farmers do not accept payment in any currency on their farm. They sell futures on the commodity market before the growing season begins to lock in a price and hedge against volatility.

> you need to download a 400GB blockchain on your device

You can use light wallets such as Electrum without trusting a third party, and with no loss of security (though it potentially sacrifices privacy).

Even if that weren't true, a 512GB drive costs $10 these days. That shouldn't be a barrier for anyone.

> This means you will need a custodial solution like lightning

Lightning is not custodial. You do not need to trust any counterparty.

etc.

This entire comment is very misinformed.