Yes, that is accurate but specific to full table exports. Full table exports are only one of the ways to report on data in CJA.
You can have up to 5000 dimensions and metrics available for use in a single data view. You can use those components however you'd like in Analysis Workspace. But, specifically in full table exports, you are only allowed up to 5 dimensions and up to 5 metrics for that individual report. You can pull as many reports as you'd like using different dimensions and metrics.
Since CJA handles cardinality differently than AA, certain guardrails need to be put in place in order to accommodate the possibility of a large number of unique values in full export tables. In Analysis Workspace, high cardinality dimensions reach a limit and aggregate dimension items with low instances into a single value. Full table export reports every unique value up to the specified limit based on product tier.
