I just ran Power Delete Suite on all of my comments and self posts, stating they have been removed in protest.
On July 1st, I am deleting every comment and post, then closing my account. Reddit was fun while it lasted.
The fediverse is still raw, but I see massive protentional here, and I am ready for this journey with all of you.
Do you live in Europe? Perhaps you can request the Right to be Forgotten (GDPR). If a lot of European do it, that might pressure Reddit.
You can also make a request under the CCPA if you live in California and the DPA if you live in the UK.
Unfortunately no enforceable measures that I am aware of for residence of New England.
I think they would just use the normal account deletion procedure, so all comments would still be there just with a “deleted user” user