Thanks for the feedback, this is a plugin to help with troubleshooting and couldn’t realistically solve all problems for you.
Not all issues can even be detected automatically so we leave time for the user to evaluate and decide if the site is working after each change.
WP’s built-in Health Check is also a useful troubleshooting tool, but it only lets you disable plugins one at a time, whereas Plugin Detective will automatically try different sets of plugins to help you quickly narrow down the potential cause.
Actually the other plugin does the same thing. you can enable and disable in bulk by going to plugins. It has the advantage that other users do not see your attempts to find the problem. I don’t know if your plugin was only visible to me.
The plugin doesn’t do anything special apart from previewing. But I can do it easily with a second tab.