New
#21
I don't know, but you can test it for yourself. As I said, it's portable, so just download and temporarily extract it to a folder on your desktop (or anywhere you want), then launch it and test. When you're done testing, delete the folder from your desktop and it's gone from your system. No harm, no foul.
There are many different avenues where ads can come from, so I don't know what ads you're talking about. There can be ads on the webpage, pre-roll ads tacked on the videos, ads embedded by the creator of the video, etc. Understandably, no tech can block ads the content creator edits into the video him/herself, so you must be referring to some kind of partial ad blocking.
TBH, I rarely watch YouTube on my PC anyway. I usually watch YouTube on my living room TV via an Amazon Fire Stick, where ad blocking isn't possible ... so I'm not the one to ask.
I thought your concern was whether or not you can leave Brave Shields enabled without it crashing, and with 1.43 you can. As to whether Shields 1.43 performs to your satisfaction, you'll have to determine that for yourself.
If @RickyR is right that the 1.47 crashing is due to a change in the underlying ad tech, then it's also possible 1.43 is not crashing merely because it's oblivious to the changes -- and consequently, may let the new-tech ads through, unblocked. But you'll have to determine if it works on the ads you're concerned about.