I sympathize with you and have also found this frustrating, but note that job ads are first, speculative, and second, seen as marketing material. Many ads will

I sympathize with you and have also found this frustrating, but note that job ads are first, speculative, and second, seen as marketing material. Many ads will list fads because they think it makes the company seem like it's on the cutting edge and they believe it will attract candidates. Most such companies will end up not doing anything significant with the tech. "In the cloud" has become such a thing these days that companies that explicitly avoid the cloud on the technical side end up writing job ads that say things like "help us transition to the cloud!" I don't know if this is now considered standard marketing/HR mumbo jumbo or what, but just like a resume, a job ad should not necessarily be taken at face value.