Again -- for many users, surveillance and top-down control aren't really something they care about, so using a lightning address from LightSpark really is a fine solution -- it's pretty convenient and should work fine when LightSpark's servers aren't down or unresponsive.
But -- If you DO care about surveillance and self-custody, please take the time to do this properly with a solution like Alby Hub, which is **real** self-custody, with a fully verifiable code stack that you can run on your own hardware, with no compromises: 

Alby Hub
Self-custodial, open source lightning wallet that connects to apps