As discussed at https://make.wordpress.org/support/2024/02/suggestion-for-a-change-in-the-guidelines/, the forums team met on Slack on Feb. 8 and agreed to the change in the guideline regarding commercial reviews.
The paragraph currently reads
Reviews of plugins and themes are to be limited to the functionality of the plugin or theme hosted on WordPress.org and the support provided by the authors for the versions of the plugins/themes hosted on WordPress.org.
That sentence will be replaced with
Reviews of commercial plugins/themes are acceptable on wordpress.org when such reviews discuss functionality or user-facing features. Reviews that are essentially payment disputes or are used to leverage support will be archived, with a reply that such disputes should be handled via private email.
Essentially, if it’s about WordPress, the review is OK. If it’s about the process of purchasing, subscribing, or supporting the paid plugin, then a review is not OK.
Various what-if scenarios we discussed on Slack.
The plugins document will be updated in the near future.