Sure, but “effectiveness” is usually not a binary and is often difficult to measure. Small, but persistent changes should still add up. Eventually.
So long as people recognize that these things are in fact quite toothless, I’m not sure they are entirely detrimental. There’s no reason this couldn’t be used as a starting point for more effective action, now that signatories are in greater contact with the campaign.
So, foreign judges who are meddling in HK affairs are upset that China (the inheritor of HK) is meddling in HK affairs?
If the West actually cared about HK independence, why do they wish to maintain colonial judges in HK courts? If they cared, shouldn’t HK judges be in HK courts?
While China has been heavy handed in its effort to speed up the timeline of the power transfer, in the end, the West has concluded that HK is to be Chinese territory. By the West’s own policy, these are foreign judges getting kicked out by the “rightful” new rulers, just a bit early.