I don’t understand why people have jumped to an assumption that this is purely to bring the pack together?
It seems to me that the rules didn’t intend for the flexible flooring Ferrari and Red Bull put together, and so they are seeking to clarify that. It just so happens that if that is what is making them faster, then they lose that pace. The nature of these things means the two things are often aligned (teams would bend the rules as much as possible only if it means a performance advantage), but should just assume that they are pursuing this purely to close the pack. It could just be to clarify the rules.
Principally is it that different to, for example, addressing the flexible rear wings last year? That was also mid season.