Yes, that's important.
Wonder what success of FH would do to works on BFR? If BFR would be as successful as Musk writes, would SpaceX make two rockets - or optimization will lead to just one?
Wonder what success of FH would do to works on BFR? If BFR would be as successful as Musk writes, would SpaceX make two rockets - or optimization will lead to just one?
BFR/BFS will come online as a self-competitive offering from SpaceX initially and both lines will be out in the market together (BFR vs. F9/FH). If and when BFR attains sufficient maturity, reliability, and market trust then the Falcon line of rockets will be phased out. BFR will have much greater capabilities (higher payloads, etc.) but will be substantially cheaper because it'll be 100% reusable and the reusability longevity for its parts will be much higher than for F9/FH, so there won't really be much reason to keep Falcon 9 or Falcon Heavy around.
However, the FH uses RP-1-O2 Merlin engines, whereas the BFR will use Methane-O2 Raptor engines, so they might not learn too much.
Edit: RP-1 fuel.
If BFR is actually fully reusable it would be cheaper to launch than the F9 (due to the non-reused second stage).