Europe to End “Salary Secrecy”: Employee Salaries to Become Public by 2026 The law came into force in June 2023, but its implementation will be progressive depending on the number of employees in the company until June 2026. https://fikku.com/111920
Folks whose parents had great communication or great incomes (or both might) might not see issue.
And it is not strictly "guys splurging on themselves" - it is as, hopefully is amply clear from thread, guys spending scarce resources needed for family stability and wellbeing on personal luxuries - without communication & agreement being secured.
Those well-off may assume presence of resources or agreement seeking by partner that makes stuff like a bike a non-issue - that's not true for all.