I'm Norwegian, so I almost exclusively work with non-native English speakers as well. As I said, I think it varies how much people care, but I have never heard that correcting spelling errors in review is considered toxic. Personally, I find it helpful, and with very few exceptions, that seems to be a common attitude with developers I have worked with. There could be some cultural differences here though.
It may also be that it varies somewhat depending on which field you work in. I have mostly, but not exclusively, worked with control systems in the maritime sector. Software should never be the only safety barrier, but poorly written code could literally play a part in killing someone. I acknowledge that this may call for more pedantry than something like a computer game. But I also agree with
@protocol7 that caring about the craftmanship of your code is important in general, and probably a good quality indicator for a developer. The odd spelling mistake for us non-native English speakers is to be expected, but if you are inconsistent, and if you resist having your errors corrected, that looks shoddy to me. I think a good developer is someone who cares deeply about the quality of their work, and is happy for any corrections.