I've had multiple coworkers remove comments or reject CRs because there were too many comments. If you foster a culture where comments are discouraged then it's less of an impediment
It's not that English specifically is required to do this, but if the organization is American it does seem like English would be the default and proficiency would be pretty important.
I didn't even knew this was a thing. I write tons of comments thinking they could be appreciated in case somebody has to glance at the code.