For new users who are not yet Bitcoin holders, they might first acquire ecash sats. Once they accumulate enough, they can have self-custodial Lightning Network sats, and as the amount grows further, they can then own their own on-chain sats.
The order of acquiring sats is potentially reversed for new users compared to existing Bitcoin holders.
quoting note1wet…ylglTransfer the sat from the non-self-custodial eCash wallet to the self-custodial Lightning Network wallet. note1w7a…av2v