Intel Mac running Monterey still usable in 2026?

Hello, I’ll have an MBP M3 at home after switching from Windows, but I need a cheap Intel MBA for urgent tasks while traveling—editing docs, signing files, etc.—without worrying about damage or security. My key question: Roughly how many years can I use it (e.g., with Monterey OS) while keeping Google Chrome and LibreOffice functional? I’m not concerned about battery life. For example, would a MacBook Air A1466 (i5-5250U, 8GB DDR3, 256GB SSD) still be viable?