The only downside of Linux is that it isn’t supported by some proprietary software people might need.
If you already use open source software, what’s the point in running Windows?

• Use the heat of the bulb to determine if it was on. (Shows you can memorize stupid interview questions)
• Ask a team member to coordinate with you in the other room. (You’re a team player)
• Use a cable locator (Proper tool for the trade)
• Put your phone in the other room, stream camera feed to your work laptop (The tech approach)
• Unscrew the bulb. Now you know that no switch controls the bulb (Exposing the flaw in the task’s phrasing)
• Open switch panel and disconnect one switch. Wait a day. If no one complains, disconnect the second. Wait a day. If no one complains, it’s probably the third. For good measure, disconnect the third switch. If still no one complains, remove all switches and the lightbulb, since they’re not needed anymore. (The Sysadmin approach)

Considering that making it big just means a lot of responsibility, angry messages, AI-driven bug reports and still no pay, I wouldn’t call them lucky.