Personally speaking, I think Equihax was the better counter-argument; at least with 23andme YOU as a customer had to DECIDE to use their services and weigh the pros-cons of doing so, with Equihax I was forced into a rating system to determine my eligibility in a system that hoovers up any and all data sold to them by 3rd parties and holds all my personal information in order to complete anything from a loan application to a job application.
And when found to have been breached no effective recourse was made, and instead of admitting fault to a very high probability of Identity theft being the end result a token 'credit system monitoring' service was offered, which once again relies on these credit agencies who share/distribute this information without my consent and created the problem are let off scot-free and never suffer any consequences.
In short, it's a naive argument made from often ignorant and self-defeating practices that make others worse off because of their complacency and refusal to take privacy serious.