Is it really so painful to just think for yourself? For one sentence?

The answer to your question is that it rids the writer of their unique voice and replaces it with disingenuous slop.

Also, it's not a 'tool' if it does the entire job. A spellchecker is a tool; a pencil is a tool. A machine that writes for you (which is what happened here) is not a tool. It's a substitute.

There seem to be many falling for the fallacy of 'it's here to stay so you can't be unhappy about its use'.