It's called an opinion.
FL has been very, very vocal about being 100% right behind DCL from the moment he arrived; praising him at every opportunity, right up to pre-season. Prior to the injury the club had been linked with and were actively moving for defenders and midfielders. I don't recall much chat about or action over looking for a No9 because DCL was "looking great" in training according to FL.
It's not a far-fetched take to suggest that a No9 was not a priority for our limited resources based on the faith and trust and backing FL had in DCL, compared to other areas of the team that also needed addressing. We might sign a striker, we might not; but there is nothing to suggest the club were "secretly working on it all along, super-duper-promise" until our injury prone striker got injured, yet again.
Hardly a wild take for anyone who has used reason and critical thinking before.