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I've no idea why Intuit says you can't do this. Except the general case that Intuit reps don't know how QuickBooks works and are apparently unwilling to learn. QuickBooks makes it clear that you can do this.

With QuickBooks 2019 and newer, all the currently-supported versions, you can easily delete the audit trail using the Condense feature without removing any other data. In fact, when you choose the option to remove the audit trail, there are no options to remove anything else.

To do this, start at File | Utilities | Condense. On the first slide, pick the option to remove the Audit Trail.

When you click Next, QuickBooks will remove the audit trail - and nothing else: