As handy as a tldr usually is, the actual video is only five minutes and much easier to understand. Thanks for the share.

Tldr from notegpt

Summary

• Qatar Airways operates a daily flight from Melbourne to Adelaide, despite it being almost empty every morning.
• Airlines need permission to fly routes, and flying empty or near-empty planes helps maintain their rights to the route.
• Qatar Airways has a limited number of flights to Australia's major airports, so they registered a flight to Adelaide to bypass this restriction.
• Passengers on this flight disembark in Melbourne and cannot board in Adelaide due to aviation laws.
• The flight then returns to Melbourne empty before flying back to Doha
• Qatar Airways gets additional flights to Melbourne, and Australia avoids potential issues if Qantas goes bankrupt.
• However, this results in unnecessary carbon emissions.

Highlights

• 🛫 Qatar Airways operates an empty flight from Melbourne to Adelaide every morning.
• ✈️ Airlines fly empty planes to maintain legal rights to routes.
• 🌏 Qatar Airways registered a flight to Adelaide to bypass restrictions on major airports.
• 🚫 Aviation laws prevent domestic passengers from boarding in Adelaide.- 🔄 The flight returns to Melbourne empty before flying back to Doha.
• ♻️ Additional flights come at the cost of increased carbon emissions.
• 🔗 Bellroy offers sustainable and design-focused accessories for travelers.

Hmm