In GA4, you can view custom dimensions within standard reports.

True. In GA4, custom dimensions can be integrated into standard reports. This is a significant improvement over Universal Analytics, where custom dimensions were primarily accessible through custom reports or explorations. GA4 allows you to configure custom dimensions to appear directly in various standard reports, such as the Pages and screens report or the User acquisition report, after they have been registered and data has been collected. This provides a more streamlined way to analyze user-defined data alongside pre-defined metrics.