That says more about you than them, though. You’re projecting your own inability to translate knowledge into new systems and assume the same of others.
I wouldn't blanket block a resume that said "cloud engineer", I'd just make sure to probe that they aren't just an "AWS engineer" or "Azure engineer".
A title I have frequently worked under is “Cloud Engineer”.
I’m strongest in AWS, secondly Azure. But I also am extensively using Linode’s platform and Kubernetes too.
My best friend’s title has also been “Cloud Engineer” and he is exclusively in AWS. He doesn’t really know more about Azure than he needs to get things connected to AAD.
How anyone could know that without asking eludes me. If you’re hiring for a position, you have a responsibility to know.