Sure it's only taking a webhook, reading an API, looking up a db entry and then updating via API.
But just knowing it's running on someone else's infra and there's so little code to validate is very comforting.
Prior to this I had a version running on a VPS and yeah I can do it. But you end up with a LOT of code / config to run the web server, the queue, the database... And any of that could be introducing bugs and security problems.