Still don't understand how would you spend 0.00001 if you cant you can't even open a channel with that amount.
Now you can't spend it because fees on chain are bigger than that. Will opening channels be cheaper in the future?
You don't necessarily have to be the one paying the fee. Both parties in the channel can fund the channel in the same funding transaction. So if you only have 0.00001 BTC, you can have the other party be the one who pays the transaction fee. They might do this if the channel is not only for you to buy a coffee but rather that you are also expecting to get paid by this person or route incoming payments through them.
And what if you have only enough money to buy a coffee, so you go to the coffee store and want to pay them with it. Would it be reasonable for the coffee shop to pay transactions fees for you? Is this supposed to be a common use case scenario?