Yes, such things are useful, as is bitrefill. But it would still be best if all stores could just be paid with Ligntning Network. Until then, we will look for and use other options.
Discussion
One day, if plebs spend their bitcoin wherever it’s accepted.
People will use Bitcoin if they see some sense in it. So far the problem is that they have no idea what it is and why they should use it. If all merchants have stickers that they accept Bitcoin, people will be interested themselves. I think it's important that merchants themselves offer it as an option - they're not losing anything. We have to convince them.
There is a pretty good economic reason to use bitcoin as money. But most hodlers listen to Saylor podcasts and don’t read about money.