Interesting. Do you have a source link where he said that?
No. That's a prediction based on widely-reported efforts by Trump and Ryan to try to get some movement out of either the Freedom Caucus, or the moderates, or both. It wasn't them insisting on just a single particular bill. And I don't think they cared which group gave ground -- they were just trying to push at either end to see if it was possible to cobble together enough votes. And I think Trump would have signed it either way, else they wouldn't have even been trying to move either/both groups.
The core problem is that there are too many moderates in the House and Senate who will not vote for the kind of bill demanded by the Freedom Caucus. That is the core reality, and blaming Trump, Ryan, or McConnell doesn't make sense because they cannot dictate how individual Senators/members will vote.