Because it usually forms from specific predecessors, the difference in frequency in asymmetric soups compared to C2_2 (the symmetry the object has) is almost negligible. Similarly, in rules that support the object but not its predecessors, such as HighLife, it is much less common.
Almost all Big Ses are formed through the sequence that contains generation 16 of this pattern, with the glider optional. Generation 0 is the aforementioned pi+boat collision. (click above to open LifeViewer) RLE:herePlaintext:here