As a player with the most experience doing this shit I decisevely say
this strategy works only vs dumb and clueless lobster team and heck even they adapt after a while and by the time you finish the nux they will have 3-4 antis covering all points of importance
Guess why I rarely do nux rush nowdays? Lobs do spam antis :P
Widow can be countered by a windwall around anti, cheap and super efficient. Even total lobs learned it nowdays :P
After a certain anti nuke density is reached it becomes impractical to use nukes... - too expensive to scout and kill/disable anti nukes
As a surprise strategy it can be quite good tho, like a billion other strategies :)