Tl;dw: summarized by AI:

The YouTube video "Tech Bros Invented Trains And It Broke Me" critiques Polish startup Nomo's mrail train system, which aims to achieve speeds of 550 km per hour on conventional tracks. The speaker argues that this is unrealistic, as rail systems are divided into three segments based on speed. The speaker also criticizes the idea of automating trains, stating that selecting the right wallet is a more pressing concern. The video also discusses the challenges of implementing the European Rail Traffic Management System (ERTMS) in Europe due to the complex and disparate rail systems. The speaker compares European rail systems to American rail, highlighting issues with punctuality and mixed traffic. The video concludes that the Magrail system, which aims to transport containers at high speeds on land, is unnecessary and impractical due to logistical challenges and safety concerns.