Why? Sure, it isn't ideal for every miner but I think it has a place. Braiins FPPS with LN payouts is pretty nice for heater capture mining on a small (home but not a fun miner like a bitaxe) scale where you may have miners turning on and off but still want to capture some payout for your time they were on.

In that case it is the shortest and safest path to sats in self custody.