I don't know why people don't like to use Bitcoin for cross border payment, maybe it's illegal I'm not sure but it feel faster to me. As long s your money is not illegal, buy Bitcoin and have prove of receipt that you bought Bitcoin ad send it to who you want and it's simple. When ask about the Bitcoin for tax, show proof of receipt and transaction but it seems people are scared or they don't like to use Bitcoin for cross boarder. It feels faster than wire money and western union.
Lightning feels better in adoption than main chain, like it kind of pity when people use other layer for transaction when Bitcoin lightning is better than them, they just don't know how to make life easy for their self. Maybe one day by the time the government decide to make Bitcoin a legal tender, they will want to use it. Or maybe the government may not even do that due to fear that people may not use their traditional companies to send and receive payment.
To be fair its legal in most countries to buy and hold BTC and use it. Problems arise elsewhere though. Sure, sending is easy, receiving is more tricky, particularly for small amounts.
If youre sending $200 to family to tide them over, how much hassle is it for them to use it? Illiquid local exchanges, identity requirements, lack of fiat off ramps all conspire to make life hard.
Lightning is great, but theres plenty of legitimate concerns about how easy it is to use. Managing channels, ensuring you have sufficient inbound liquidity, running a node, etc. Its not not knowing how to make life easy, its that life isnt easy. Apps can help, of course, but then were back to trusting a third party.
Governments dont really care about the fees, but losing visibility and control is a step too far. So, faster doesnt achieve much if theyre trying to prevent you from receiving or spending it in the first place.