Scientists almost never negatively cite papers, and actually never do for incompetence or bad methodologies, so this is not a problem in practice [1]. In fact they don't even notice when citing retracted papers [2] so good luck getting them to notice deeper problems.
The reality is, a citation is always either neutral or a positive reference to other work.
[1] https://www.pnas.org/content/112/45/13823 - only ~2.5% of citations are negative. Of those virtually all are about the findings, not the methodology.