I'm one of those chronically online people and I didn't even know about the issue until it was brought up here. And even then I did not bother looking up the source video to know what it's about. So I don't know if you can call that "successfully tarnished the brand".
Besides, to the real enjoyers of VCA, or jewelry in general, people won't necessarily jump to the conclusion that it was VCA's fault, considering that a lot of people have bought the guilloche Alhambra bracelet, over many years, and there has been no widespread quality issue (unlike, for example, those stinky Birkins from Hermès). I also don't think it has tarnished the reputation of the service you get from VCA because as people who have entered VCA stores know, they prioritize giving customers a stellar service, and whatever issue that store has is only specific to that store and not a general trend that can be seen across all VCA stores (unlike, for example, again at Hermès where one is surprised if you are treated well as a customer).
Some people give too much credit to influencers but those who even have a bit of skepticism in them know that influencers are not usually where the truth can be found, simply because they do what they do primarily for engagement.