Why it worked
The video uses a relatable, humorous 'DIY fail' scenario to capture attention, then seamlessly transitions to promoting a relevant utility app that solves home repair problems.
Product placement
(a) FixMate: The app is shown in the end card and watermark, and the creator's handle and bio link confirm it is a DIY home repair assistant. It is the subject of the video. Removing it would remove the branding and the CTA, but the video's content (a humorous DIY situation) would remain.