Some X% of the people petitioning there would be actual users of the model in scope (Macbook Pro 2017 and beyond). And Y% of those people may actually have this issue.
Problem is, nobody would ever know X and Y, and its really bad to speculate. It makes the whole petition basically a guessing game.
Realistically speaking, the only outcome would be to force Apple to take note, or at best issue a statement. Either way, the keyboard is not going away. It would be announced that it would get "better over time" - which it would have anyways. Its hard to do worse than this going by the feedback.