Really? If - as you yourself say - Taylor was aware of the need for Farah to move on early from his contract, it follows that he was aware of the need to develop his future (cheaper) playmakers to step up before Robbie left.
I find it much easier to believe Taylor would simply amend his game instructions in what was Farah's final year, and ask Robbie (against his better judgement) to simply distribute the ball to the halves. The benefit to the club is clear, and it's an easier method to the same outcome than saying one thing to Farah at training/in front of the whole team, only to come out in the media and say the exact opposite.
That would have been one mind game that risked Taylor any future respect of the post-Robbie squad whose interests he had at heart. Not everyone is as machiavellian as you, Pou - or as prone to overanalysis when things can be quite simple.