Is the following statement about workflow step types and their usage true?

No, this statement is incorrect. When a wait step is encountered in a foreground workflow, it does not cause the user’s screen to freeze for the specified number of seconds. Instead, the wait step simply pauses the workflow execution for the specified duration, but this is managed in the background. The user interface remains responsive, and the end-user typically won’t notice any freezing or delays caused by the wait step itself.

References:

SailPoint IdentityIQ Workflow Guide (Section on Workflow Step Types)

SailPoint IdentityIQ Scripting and Workflow Best Practices