i had both the MAPLESHADE SAMSON audio rack and the maplebloc 4" isolation platform/brass footers .
They work: the only variable is that as in any tweak, the results are dependent on the system in question.
The prior capricious comment to actual characterize MAPLESHADE as a "joke" is just a heavily biased anecdotal personal value judgement that has been dismissed as such accordingly.
I sold the very heavy SAMSON North American "mass loaded isolation designed" rack and replaced it with a "light and airy" British design that channels unwanted vibration away that works better in my system.
they both work but very differently in design and approach.