I think everybody will agree that Sony engineers are knowledgeable and know what they are doing. However, that does not mean that a product any engineer created for mass marketing is perfect for every situation. The engineer cannot engineer for every situation, only for a generic solution to satisfy their design goals and what they see as most valued by the bulk of users for their target market. They cannot cater to individual tastes, only to the "averaged" consumer requirements.
Take the situation of a high performance car. Will the factory tires be perfect for every situation? That is unlikely.
It is true in general, for any product, that there are user mods/individual preferences, that can tune for specific requirements and situations, and enhance an already good product. The thing to note with these, is that they are for specific users requirements, and are dependent on System, Synergy, type of music, user individual preference, etc., etc.
I believe every engineer's creation is a starting point, and not a solution frozen in stone, so there is no sacrilege, or negative reflection on the engineer's capabilities if modifications are made. It is more a praise of the product, that the user values it highly enough to spend the time and energy, and money, to try to bring it closer to their own personal preferences. And note that this is not to condemn the engineer's choice, but just to adapt it for a smaller user base with specific situations and requirements.
I do agree that the majority of users will not do this, or need to. But there will also be users who are looking at how something can be improved, and we can be thankful for the insights that they provide, as the extra data, negative or positive, contributes to the overall knowledge, of amateurs and professionals alike.