Mention of costs is certainly relevant to the value of the program, but comparison against your particular set of personal circumstances means nothing to the majority of the people reading this thread, and your repeated reference to a comparison between £230 and £50 per year serves no real purpose whatsoever. I would have thought it would be clear that's what I meant by "confusing".
Wait times for Fast Track passport control has always been highly variable, and often results in a longer wait time compared to the non-FT non-EU queue when a few problematic cases clog up the 1-2 officers manning the FT queue, let alone the UK/EU e-gates queue. It cannot be relied upon in such a manner as to say "For those eligible for Fast Track passport control at LHR, the value of RT has dropped over the course of the past 12-18 months."
With RT, you have the option of taking the fastest queue every time.