But how far do you take your paranoia?
A check that the spoilers are all stowed when you expect them to be won't catch that they are not deploying when you want them deployed, or are deploying opposite to the desired sense, or ...
Flight control sweep type checks are not intended to, or able to, "catch" all these unlikely scenarios; their principal function ios of course to detect jams or restrictions which could have occurred due to FOD or similar getting into the controls. Proper function of flight controls following MX - or indeed of any system - can only be assured by a thorough RTS; it may be cold comfort to aircrew, but a reliance on the proper MX having been conducted becomes unavoidable ...