Deactivates Link Tool in Posts & Pages

I’d like to give this plugin a 5-star rating however for me it’s really worth a 1 (I know I rated it higher than 1 because I’m sure for others it’s not completely useless).

What renders it completely useless for myself is that the plugin removes the link tool in Posts and Pages – which means my clients would have to add their own html code in order to add a link to their content. This would be OK for me if it was my site but as it’s going to be used by people that are not familiar with HTML the plugin is useless.