I'd rather not but on bigger timber with heavy lean and heavy tops you should. Anyone with know how in my timber should agree, and the best ones do. Think big northern red oak. Depends on felling direction vs lean, how heavy the crown is and how far out it is crowned out, also in places where there is excessive grape vine or standing dead it allows for a lot more time for escaping. The tree that guy cut, looked straight up and down, unnecessary.
There are so many more important things, I don't fault anyone for reverting to basics, and it is very safe for our timber. I'm more concerned with where someone places their fuel, if time management and productivity is the issue.
Depends on when and where, as to how often. Some days only one or 2 trees, some days most trees. (the timber ones...)