A few soundbites will only get stale after hearing them a few times. If a feature like this were to be included then it would need to be done in depth, and then suddenly you are looking at a massive feature that would take a lot of developer resources. One very important aspect of racing simulator game design is that the game is designed with high replayability in mind.
Dirt Rally 2.0 for example has a feature where Phil Mills, a world champion co-driver who is a great co-driver in the actual stage, says some line after you finish the stage. The number of different lines he has is very low, and he never has anything meaningful to say in his post-race soundbites (as opposed to a race engineer who tells you important information) so the feature only makes the game worse after you have heard the same typical soundbites enough times where they become dull and stale, and it's just painful having to hear the same stuff yet again for the umpteenth time. Numerous players, myself included, requested an option to disable it which the developer thankfully added. It's the kind of feature that needs to be done properly, otherwise it's better not including it at all.
3 soundbites, 2 of which are the same, 2 of which mean nothing, and one is stating the bleeding obvious twice, is a great example of the kind of commentary that would get stale very, very quick.
