If by "soon enough" you mean "right about now", you'd be exactly right! It's the tiniest of tiny drips, but I'm fairly sure the whole thing needs replacing. The plumber's coming back today (free of charge) to sort it!really???
A bodge job with PTFE tape it will leak soon enough. Looking at the photo its a relatively easy job only if you can stop the water flowing. But not all jobs are trivial even if they look like it........that is a plumbing fact.