Depends what you are calling a widowmaker.
What most people call a widowmaker, I call a "sword of Damocles". Ie: it's hanging over your head by a thread, and will eventually fall unprompted.
Widowmaker, I was taught referred to a tree that was dangerous to remove for the sawyer: it's under tension; caught in another tree; cutting the broken part alone would unbalance the tree, possibly causing a whipping situation, as before.
The second requires an experienced sawyer, preferably with help/spotter. The first is often unremovable in the wild, though sometimes a pole saw can work.
A broken branch hanging? Remove it. A tree that has fallen into another tree? It may eventually give way, but you need to watch/observe it. Many trail systems won't remove them until they are obstructing the trail, because of their relative danger to the sawyer. You should be aware of the danger in trying to remove one of these trees, and ask: is it worth getting thrown 20 feet, or pinned by the tree, to remove it? It's there material chance of injury in leaving it in place?