What most of the “bold” options do is brew slower, allowing more coffee extraction. When coffee is brewed, the hot water dissolves several substances from the beans. This is knows as extraction. There are several flavor compounds and oils that dissolve at different rates. Some require longer or hotter water to extract, while some extract easily (this is the supposed benefit of cold brew, that the more bitter compounds don’t extract or dissolve in cold water, so it’s less acidic).

What most of the “bold” options do is brew slower, allowing more coffee extraction. They don’t really make it “bolder” in a good sense. They just take a bit longer and extract more. And yes, they do extract a bit more of the same compounds you were getting on the regular setting, so in that sense your assumption would be correct, you just get more of the same flavor. BUT, longer brewing can also extract compounds you don’t want. A lot of the less dissolvable compounds that come out with longer than normal brewing are bitter, and have off flavors. And some are good. But in general, over extracting is a bad thing. And most coffee makers are designed on their normal setting to extract properly. Extracting longer often causes over extraction.

So try it. It is possible you like the bold setting, because you like the different flavor profile. But it’s also possible yo don’t like it as well. But in either case, it is not just a stronger version of the same thing. Often it is a little bitter.