It really depends on how the rest of the interview process goes, if they said their tests were in horrible shape and were committed to making it better then it'

It really depends on how the rest of the interview process goes, if they said their tests were in horrible shape and were committed to making it better then it's not a dealbreaker, even less so if they can point to some commits where they've improved things. The two common types that you can sus out with a code review are the bullshit artists and the ones that really do think the code is great. There are other factors too, I work somewhere with mountains of horrible code, but they compensate by not putting you under pressure and giving you time to work through the mess. If they had the same code and constant pressure then I'd be long gone, life is too short for that. I'm really surprised by the opposition to the idea, we all seem to agree that good devs are in high demand but few on the hiring side seem willing to bend to that reality. We all seem to agree that hiring is expensive but the hiring side doesn't seem willing to let the candidate who will walk in a month eliminate themselves.