Review for NeurIPS paper: Implicit Graph Neural Networks

Weaknesses: After reviewer discussions and reading rebuttal, I strongly believe this paper should not be accepted at NeurIPS. 1) Concern on over-smoothing and sub-optimality of the method is not addressed. I asked for empirical support but authors fail to respond. The description of the algorithm is unclear and important details are missing. This makes the paper not reproducible and the results are questionable. I assume reproducibility is a very important issue for NeurIPS.