A big misdirect is that nano's design doesn't use proof of x directly to protect consensus directly the same way that bitcoin and other cryptos do, so it is hard to make direct comparisons.

It also means that if you try to make general arguments, it has a defense of "yeah but that doesn't apply to nano".

No one really has time to critique nano directly, it is not up in the market so it is not a threat to anyone. Also the community is not so open to exploring these criticisms honestly and figuring out how it might apply to nano.

So yeah. Hard to support a technology run and supported by people who are not intellectually honest.