- Sometimes, meme activism is too effective at the goal the activists want, as in the case of Andrew Yang or Black Lives Matter. (At other times it is effective, but not too effective, as in the case of abolitionism.)
- Sometimes, meme activism is too ineffective at the goals the activists want, as in the case of Joseph Kony. (At other times it is ineffective, but not too ineffective, as in the case of the Hong Kong protests.)
- Sometimes, meme activism allows its proponents to argue for shallow ideas that they claim to want probably don't actually want were they to reflect on the ideas, as in the case of Lock Her Up.
Those are... pretty much all over the place, and only the last one seems directly connected to the meme-ness (an idea optimizes for ease of spread) of the meme activism.
And, fundamentally, no one is going to listen - nor should they - to the idea that their activism is too effective, and it is somehow unfair for them to engage in such means. This isn't a board game with rules, where everyone shows up to have fun even if they're being competitive at the table. The goal of an activist is to get what they want; the goal of the opposing activists is the same. Voluntarily giving up "unfair" advantages is just a good way to ensure that your side doesn't win.