I think grammar is as much as staple as olive oil is in the kitchen. If you were from another country, your grammar would be so poor that grammarly could be a nuisance…but not to the extent that autocorrect is at all.
Its much more of a mild and healthy addition to our computing experience. I find I use it 5 to 10 times a day and I only write the occasional document. If we can assume that the context is we are writers who treat words like meal and we want our words to be well-received then i recommend it