Shareaholic offers many different types of marketing tools. The product that you're referring to is the URL shortener, which is independent of the Share Count Proxy product -- https://www.shareaholic.com/link-manager/retargeting
This URL Shortener service is also GDPR compatible as retargeting pixels are not set for EU subjects regardless of what customers want to set. In the roadmap is to add an opt-in message on the redirect.