Obviously you are entitled to have an opinion
Note that the scenario below is
power limited (PPT), but I've tested adjusting the scalar value under several different conditions.
Even when the CPU is completely unlimited in terms of PPT, TDC and EDC, increasing PBO Scalar (FIT ceiling) does not increase the allowed voltage and therefore the maximum achievable frequency.
For example on Pinnacle Ridge, increasing the PBO scalar allowed significantly higher voltage in all conditions. On Matisse the allowed voltage is the same, regardless if the PBO is either 1x or 10x.
Because of the voltage limit, this CPU won't boost higher than 4.175GHz on all cores, regardless of the removal of all limits and despite the fact that the tDie is with well within the spec.
Maybe it depends on the silicon characteristics, but that's the case on this 3900X specimen at least.
IIRC I also checked it on the 3700X and the results were the same.