You're comparing apples to oranges...Perhaps this is a situation the 29th-century time cops will have to take care of.
I mean, they had to clean up the mess left behind by "Timeless", and arguably this whole thing is a lot worse...
You may have perhaps forgotten that this whole season, after the Stargazer explodes, is a Q Creation.
When all is right again, those semi-drones won't still be in the Picard Cottage basement.
Technically, when Picard and Gang fix whatever Q fiddled with, things will return to the way they were before the explosion.
While Q will probably let a few things remain, I doubt Picard will find bones in his basement walls.