I'd say the issue is less so the verbose explanations and more how they're given. For instance, Whis explaining that Vegeta was using less than 10% of his SSB Ki against Hit would be fine if he wasn't explaining it to Beerus, someone who can sense God Ki and should've spent enough time with the transformed Goku and Vegeta to know how the form works. This is a good example to use as the dialogue presented in it is also very stilted and unnatural that make its role as needless exposition obvious. The contrast is apparent when you consider how exposition was delivered in the original manga, where Toriyama took attention to delivering it to characters who wouldn't know the information and the dialogue actually held a purpose beyond padding. The way it's delivered in Super that often comes down to characters stating the obvious is less of a necessity in information and more akin to parody in how it's very much the strawman people give to Shonen anime dialogue done unironically. Like a lot of issues in Super, I'd say this partially stems from Super being influenced by the trends of newer series rather than looking at what worked and what didn't in the source material.