"If, however, some content appears in the chain that causes significant risks, we can fall back to the reactive method, which is a retroactive chain reorganization to invalidate the offending block (and any subsequent blocks) while immediately activating the new rules." From

GitHub

BIP 110: Reduced Data Temporary Softfork by dathonohm · Pull Request #2017 · bitcoin/bips

Mailing list thread at https://groups.google.com/g/bitcoindev/c/nOZim6FbuF8 Editor note: please post conceptual feedback and meta-commentary on th...

Okay I guess I didn't think about it enough

Liars always hope you don't. Remember IBIT and other proxy Bitcoin always has the contract terms that they hold the right to pick for you in a hard fork. No picking yourself and doubling up like self custody.