Users have predominantly negative views about the WordPress PHP Compatibility plugin, citing several recurring issues. While some appreciated its intention to identify plugins and themes compatible with the latest PHP versions, many users reported it as outdated and unreliable. It frequently fails to scan beyond PHP 7.3 and doesn't check newer versions like PHP 8. Users also reported frequent hangs, timeouts, server overloads, and false positives/negatives about compatibility. There are complaints about a lack of support and updates from the developer. A few users had a positive experience, noting its potential utility and ease of use when it worked. However, the overall consensus is that the plugin desperately needs updating and better support.