The final push to start using Firefox over Chrome on Android might finally be thanks to the enormous selection of add-ons (Firefox's version of extensions) coming out next month. Chrome doesn't offer native support for extensions in its mobile app. Also, better security.
Works fine on other browsers though. Not techy enough to say if your wrong or right, but the experience I have on a Tab s8 ultra is that 'desktop' versions are all zoomed in looking on FF.