I beg to differ, such consideration is important to anyone who wants to invest or build a new blockchain. If specific types of chains are more prone to the abuse of "transaction refusal" or other attacks, then yes I think it's important to mention it even if the technical definition of such mechanism is the same on all types of chains.

You can't just add a DPOS and POW chains in the same bin when it comes to the potential risks such a mechanism could represent.