Pros - will make corporate speak in writing much easier to pull off. Being capable to write like an MBA/HR bot is a good skill for engineers to have.

Cons - will homogenize language away from the diverse, semi-structured, creative space it is, and toward MBA/HR bot speak. Shakespeare invented a few words, and those words likely would be flagged. Sure we're not all Shakespeare, but the ramifications of flattening a language are significant and need to be taken seriously. Misinformation thrives in brittle ecosystems where the semantic meaning is flexible and the supporting ecosystem is brittle in the ability to respond to changes. Tools like this do this flattening and brittling specifically.