This is because of "chrome enterprise" more than likely. Chrome is easier to manage with enterprise policies and mdm. Also, I hope that isn't your personal dev

This is because of "chrome enterprise" more than likely. Chrome is easier to manage with enterprise policies and mdm. Also, I hope that isn't your personal device because you just made it a work device and lost any claim to privacy you could have otherwise had (US).Your work is not your family or friend, they will act in hostility when it benefits them and using a personal device for work is against your interest. At least get a cheap android phone for work if they require byod usage. But to help with your problem, firefox on mobile has extensions one of which is user agent changer which lets you set a chrome agent.