And without some measurements, then even a “valid opinion” may not be a provable fact. It’s still anecdotal at best.
Did you think this was ASR?
Subjective impressions are the mainstay of this forum.
Nonetheless I think that in this case there is measurement available - even live at shows - that demonstrates the isolation offered by the Townshend devices. Whether or not this is preferable is up to the individual.
I don't see any evidence of the isolation or 'mechanical sink' capabilities of the spiking approach.
Apart from 3rd hand reports from Richard Vandersteen (albeit weighty opinion in relation to use with Vandersteen speakers), it does seem to me that the naysayers are made up of people with no experience of the Townshend products - some with another axe to grind.
Most everyone who has used them or heard them demonstrated has a positive opinion, anecdotal as that may be.