IHM : Wrong email on receipt help text when new membership is paid by a different contact

Clarify behavior when contribution for membership is from a different contact by adding this to the existing inline help text:

"OR if the contribution is from a different contact, this email will only go to them."

----- Original Post ----
When i create a new membership and contribution with soft credit (e.g. Record Payment from a Different Contact), then, if i want to send a membership receipt, the email address displaying on checkbox 'help' text is wrong. The text says receipt will go to the 'member' - but it is actually sent to the contact who is paying for the membership (and who gets a soft credit). See screenshot attached.
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Beyond this bug, it seem to me that the email for membership receipt should not change even if there is another contact for soft credit. (Contrary to CRM-10375 )
The membership owner is always the same and in facts, when you want to edit a membership for sending a receipt, it's always the membership owner the recipient, unrelated to contributors.

For my use case, it may be more logical to add a second checkbox during the creation of a new membership with contribution, for sending another email (a contribution receipt this time).
And is it this email which may be updated accordingly to the chosen soft credit contact.