For thousands of years, human language has evolved and changed into what we have today. Now our AI overlords will keep our language static using a paid service. Imagine the new languages and dialects that could have been. Damn you Grammarly!!!
Also, the real tinfoil hat is our AI overlords changing our language into AI-newspeak.
Mind you, non-native speakers tend to involuntarily stretch and bend the language this way and that. It’s when somebody else in society uses that involuntary bending and stretching to mark and segregate foreigners that tools like Grammarly come handy. And, that’s my grudge with Grammarly: to me, most of its suggestions read as “you are not writing pureblood, your written mongrel will earn you the scorn of your betters.”
And they were right. All of those things have led to a huge decline in language diversity.