This is just my two cents (that everyone probably agrees with rn) but I feel that the vrains dub ending could've been handled a lot better...
I understand that they were hesitant on putting that direct confession from Ai into the dub (which doesn't make sense anyway, since there's not much need to shy away from lgbt in 2021)
But they could have just...maintained that serious emotional atmosphere and tiptoed around the line by making it platonic (like a 'you're the best partner I could've ever had' or something). I don't mind some witty banter, but in this case it doesn't nearly convey a fraction of the emotion the original scene had. (And I've seen that the dub actually was capable of handling previous 'serious' scenes in vrains properly, which makes this even worse)
Though I watch yugioh subbed, I still held a kind of fondness for the yugioh dubs that still remained insistent on changing character names, adding copious amounts of corny jokes and changing opening themes in an era of anime dubs which tend to be more faithful to the original text. It always felt like a relic of the early days of anime dubs.
But honestly they really need to get with the times.