Ya it's in the name. Google is synonymous with tracking and lack of privacy. Just another bit we give up to live in the most advanced and free country in the civilized world, governed by it's its citizens and not a conglomerate of corporate overlords selling our minds by inches.
My Gboard started doing that when I type normally!
I gave up using swipe typing because it loves to pick words I never say, have never said, and will never say (especially not in the context of the rest of the sentence, that Gboard knows about and will offer (incorrect) corrections on)