[dillon]

Ditto.

To add to this, Pulumi has a few features not yet present in CDK like encrypted state, and dynamic resources. The TLS/Random provider also seems to be missing from CDK but present in Pulumi. I am using all of these features in some Pulumi projects and couldn't imagine using CDK, ever.

tl;dr Use your preferred tooling, but don't assume a team couldn't justify using their tools of preference.