Not at all it's not a personal attack. I don't think anyone should take offence from your post or comment you don't have to tell people that they are going to! The anticipation can become true if you tell them that. (basic psychology)

In terms of my concern with Grammarly or any other chrome extension, they can take any information you type including your password, your steem keys and everything else as it is transmitted to their servers. Of course they can be trusted but just a security concern to keep in mind