I think writing "you merged" rather than,"we don't do this" would be a bit better. Also not acknowledging that there were no users yet, so impact wasn't there a

I think writing "you merged" rather than,"we don't do this" would be a bit better. Also not acknowledging that there were no users yet, so impact wasn't there actually, but it would be if it happened later, was also important to acknowledge as the lead. In general I'd write a similar thing, just speaking of the team, and not overplaying the impact. If you had no users it was no problem, that's the truth. But it would be a problem in the future so you want the team to know and practice safety. People tend to be upset if you hype it more than it is, even an little, and it comes across as you just wanting to be right for rights sake. And generally we/team/process focused language is better than "you fucked up". Why did you even have merges enabled without reviews? It's more your process failure than that guy. That being said I work in full remote with many different cultures so I have an "international average". If this was a fully Russian team or some such even what you wrote was too soft in my experience and you actually need to be very clear or they think it's nothing.