I mean... sure, but by that point he has recommended dual booting multiple times already. Using Windows as a recovery system is just the last reason he gives. By that point he has already suggested that people main Linux and keep a cracked/not activated version of Windows in the back for other reasons.

The OP gives the sense that it's purely circular logic: he is only recommending dual booting because his dual boot setup corrupted his bootloader. That's not what the video is saying.