If they're ignoring GDPR because they're in the US, you can potentially flag these as COPPA violations. COPPA is serious stuff. Courts can fine over $50k for each violation, where each individual impacted can be considered a unique violation. COPPA applies to under 13s, I'm not sure if there are age restrictions in place to join Hack Club, but if there isn't even a privacy policy, I doubt age restrictions are properly enforced.
>>Benjam+(OP)
Hack Club realized this, and now doesn’t allow anyone under the age of 13 to participate in its programs (COPPA doesn’t apply to people over 13).
>>lefrog+s3
An 11 year old child's account was promised to be deactivated, went through the dramatic "welp, you had a nice run" text wall, and then absolutely nothing happened.