The site you linked gives a method for detecting concern trollery, so the concept is at least somewhat operationalized:

Concern trolls can be identified primarily because they will retreat from, rather than engage with or be convinced by, answers to the questions they pose. They may repeatedly ask a certain question in feminist discussions without ever absorbing or replying to answers from previous discussions. They will often back into typical anti-feminist arguments, such as expressing concern that an argument is too "extreme" or a feminist too "strident" or even "hysterical". Another common tactic is insisting that some subjects are more important than others, for example, that media depictions of women shouldn't be criticised while violence against women continues.

This seems quite distinct from "someone slightly to the right of me". If this description is correct, then someone who goes into a feminist space and argues forcefully against some tenet of feminism, replying substantively to the feminists' objections (rather than criticizing their tone), would not qualify as a concern troll.