I've no idea how much he knew about what was offered and his take on that , anymore than anyone. He didn't expand on what was offered in detail just that he heard Much later that there was an offer to release on 7 or 8th. No terms of what that entailed.
Would you trust Hamas and not retaliate since hamas also said, we didn't take all the hostages, others groups did and we don't know where they all are or have access to them, so a pointless offer which they knew they couldn't uphold anyway.
For example, whoever would be so stupid to believe they could release hostages they didn't have, or held by other groups or held by random Palestinian people, when they don't know where they are. Hamas are great at deflection of blame.
I imagine any 'offer' was taken for what it appears, a tactic to avoid a retaliation. They couldn't actually release all of them anyway if they didn't hold all of them 🤷
Makes no sense therefore to use this as a 'they could all be home if...' might as well say 'they would all be home if they were never taken in the first place'.