Despite i don't believe in trustpilot scores, as they can be fake, there are only 28 negative reviews for NEXO out of 1406 in total (less than 2%). And the cases mentioned in the comment you quoted (latest five reviews made in the ssame day for the same issue) are all about how the NEXO price dropped and they received a reply from NEXO officially.
I am not defending NEXO here, but the project seems to be solid enough to maintain the good position in the market. If you have proofs against it, just post them and let the community make the right judgement.