I think the issue here is because english has been regarded as a lingua franca for quite some time. It means the language is detached from the culture and people from which the language originated from, effectively making the language a language that belongs to everyone. That makes non native english speakers feel that they are not being forced to become english when they speak english and in return, they see the english language just as one of the soft skill one has to master. Anglo people are just lucky to have been born and raised with the language.
Chinese on the other hand only gained significant international importance in the last 10-15 years and the language has not yet been fully detached yet from the culture and the people. Using chinese in an international setting would create an image of sino centrism although it is not always necessarily the case given further explanation such as the fact that Shopee‘s primary suppliers are from China. In short, Chinese is not yet a lingua franca.
Not many people can speak English as well, nor want to put effort to learn it.