I take your point, though sometimes it's worth investing a bit of effort to learn how to use a faster method, so as to save time subsequently. All depends on whether you think you'll ever want to do bulk edits again [I think you likely will].
There's a youtube video, just a couple of minutes, I really recommend you watch it: https://youtu.be/ZBurwu4TI5g
Actually, I've just had a look at bulk edit to refresh my memory (normally I only use it for reposting with 10 auto relists), and I thought you could do things like regular expression edits. Which would be great for geeks. However, I see it only goes as far as letting you say replace text ABC thru XYZ with blah blah. Not as powerful as regexps, but more understandable for those who don't relish riding a unicycle.
So go for it. You will not regret the small investment of time. That Bagley edit would have taken you 2 minutes for the video, 8 minutes for the bulk edit submission (pessimistic guess). Total 10 minutes. How long did it take you manually?