Hello smartlass,
Would you be able to list the plugins that got broken ?, as this would be helpful in compiling a damage report, and the developers could include warnings in the next release, or possibly prevent Gutenberg installing on the systems with known problems with plugins.
The damage may be able to be repaired, if it relates to text that you may entered using the editor. There is a “classic” editor plugin that you can install as a way to revert from Gutenberg. This might (though I have no real idea) help work around any code (e.g. html) that Gutenberg has damaged.
Thank you for taking the time to install, test, review, and uninstall this plugin.
And I am also sorry to hear that you had such a poor experience with it.