I have nothing to do with the customer-service or the new support center... but ya, there is always going to be some degree of client-side methods. Why? Because you can't render things for the user to see or interact with without these methods. Them using javascript has nothing to do with how secure the website, because security has to do with how they handle things on their end. Making sure they properly store passwords(not raw), making sure there are no loopholes to allow users to send malicious code through their clientside -> serverside methods(in your case, javascript).