Au contraire, AWS has a stable of foundational services that have not moved in a long time and a worthwhile knowing, no matter what service-du-jour gets rolled out. Not a moving target at all.
Azure is the worst offender, offering certs that expire in ONE year. No thanks.
Google certs expire after 2 years.
[1]: https://docs.microsoft.com/en-us/learn/certifications/renew-...