[orionsbelt]

This person is a tax lawyer and this should be the top comment.

It also matches what I have heard from a well-regarded tax lawyer that advises startups, who advises getting a spousal signature, but from a “why not just get it”, conservative, belts and suspenders approach, but does not view it as needed.

I’d also point out that even when employees receive a form with a spousal signature space included, many fail to get it signed. If this were an issue, it would have widespread consequences well beyond Carta.