The point is not a concatenation of two symbols -- the point is that this one little point will kill the glider beside it, where by "kill" I mean it becomes the static sequence:

    . o o
    o . o
    . o .

So if they are saying "death to the hacker" they are saying it much more dramatically than you can hope to get by your analysis. The point is, "there is the symbol for a hacker, flying freely diagonally across the grid, but we've added a point which will get her stuck in one form."