Not precisely a nice way to put it, but it seems consistent to me.
Data often pertains to multiple people (trivial case: direct messages between two users); the rights of GDPR apply to your data, regardless of whether it also pertains to multiple others, subject to some restrictions to safeguard the rights of others. Those legal restrictions clearly don't apply because you could pay to obtain that access.
LinkedIn would need to prove in court that the list of users who visited your profile is not your data.
Additionally, your profile is undisputably your data. Per article 15 of the GDPR, you have a right to access "the recipients or categories of recipient to whom the personal data have been or will be disclosed, in particular recipients in third countries or international organisations".
Linkedin is recording every person who visits your profile and keeps that in your user records, and they are already selling it back to you. The argument is that you have a right to that data.
Linkedin is arguing that this data needs to be protected for the privacy of those visiting your profile and the argument is that if they really believed that, they wouldn't sell it back to you, compromising that privacy anyway.