I certainly think you could call the change "artificial" (my word) since it was 100% made up out of nowhere. That aside, sure. You can argue that it's "not a big deal" since it's an isolated case that doesn't indicte the entire dub. And you'd be correct. Still, I don't want to see it ever be a big deal, and I think flaws should be pointed out when noticed. And sure, the dub certainly isn't "adult" as a result, which is exactly why the change feels distinctly out of place. And see, here's the thing. I'm an older fan. I have every intention of owning my collection 10 to 15 years from now and beyond. From that perspective I'm also annoyed that if I ever wanted to loan this out and/or show it to a much younger audience, I would have to account for that episode. And that's just absurd! Especially since this doesn't mirror original intent in any way.
It's not unreasonable to worry about future jokes of this variety either. As I've said this is not a disaster or a crisis. But a question was asked about why anyone should care about this when we have subs, which I think looks at things totally backwarRAB. Dubbing has improved to a truly impressive degree over the years, and a sufficiently high standard should be held to keep it that way where possible. Subs aren't a reason to be indifferent about whether a dub is the best that it can be.