I wanted to add my comments to
but the "add comment" link does not appear on either on the question nor on the first anwser.
Why is that?
I understand that the first answer is a "community wiki" post and as such a user needs 100 reputation to edit it. But the FAQ What are "Community Wiki" posts? does not say anything about reputations needed for commenting.
Only https://patents.stackexchange.com/help/privileges mentions commenting and it says that 1 reputation is enough to get the privilege "comment everywhere".
Please help me understand the intricacies of stack exchange's policies. Thanks.
PS: This is a screenshot of the page referenced above from my point of view: