Ok, here is a serious example of just how frustrating this crippled X-T30 tethering problem is.
I have just tried to obtain a covid vaccination certificate/pass from the UK Govt. NHS website. Part of the identification process requires you to submit a video. Unfortunately the website is unable to access the X-T30 camera.
End result, I'll have to go and borrow a webcam from someone tomorriow - or maybe just trade for Canon ..