Oak Node has a Nostr DM bot, where you control it via DMs.

Those steps become:

- find author's LN Address, copy

- go to bot DM thread

- /s user@ln-address.com 5000

Done. The bot sends 5000 sats to that LN Address, self-custodially.

The most recent version also supports "Shadowy LN Tips":

- click Like on a post (from any Nostr client)

- bot sends the author LN sats

Works from any Nostr client. Amount configurable. Self-custodial.