Why would they use a unique id unless they intending to track or deliver unique JS payloads to each user? Edit: Especially frightening given allegations of FSB

Why would they use a unique id unless they intending to track or deliver unique JS payloads to each user? Edit: Especially frightening given allegations of FSB ties that other users pointed out https://en.wikipedia.org/wiki/Kaspersky_bans_and_allegations_of_Russian_government_ties https://en.wikipedia.org/wiki/Kaspersky_bans_and_allegations...