Forced private forks count towards private user allotment

I have a feature of private repositories that I'm not in agreement with. It concerns the following scenario:

• User A creates a public repository but forces forks to be private
• User B creates a fork (which is of course private)
• User A gets admin rights on the private fork

Fine so far... here's the part that I'm not a "fan" of to put it mildly:

• User B looks at his "Plans and Billing" page and finds that User A counts towards his 5 free users.

That just doesn't seem right to me. Since user B did not explicitly give user A access, your saying this:

• A fork action can lead to a reduction in available users
• If you have a free account, you can only fork max. 5 repos that force private forks.

That seems both unfair as well as illogical. No one should be able to influence how much of my free or paid "private user count" allotment is spent but me.

Case in point: my (forced) private fork here https://bitbucket.org/mvdkleijn/social_login