Honestly, regardless of the process, I think as long as the results are the same then it's still fine. And that example was just one example I could think of off the top of my head, but there are a few more cases where it's happened and I've had to manually scrape a lot of games though.
Huh, I actually have mixed feelings on that. If the scraper was improved to have better recognition and be able to identify games better then yes, it would solve most of the problem, but it feels less accurate than if the games were scraped to be an exact match of the No-Intro set. I mean, the whole reason people use DATs is so that their sets are as perfect as possible, so leaving it up to the scraper to guess the actual game through title matching and fuzzy logic kind of defeats the purpose of being OCD.
I have had cases where the scraper has failed me entirely though - like when it scraped my Ys game as another game which had no resemblance to Ys, but generally the scraper does do an amazing job.