Yes, but when the question is whether they’re deliberately giving the impression they’re incompetent to add insult to injury, I’m inclined to assume they’re just plain incompetent.
But they do that a lot in other contexts, like using novichok agents or traceable radioisotopes for state assassinations, then 'denying' it was them.
i mean the "getting caught out of own incompetence" part of course.
a recent example was Navalny's call to his poisoner from the FSB. This was obviously NOT an intended leak