these apps really don't offer a lot in the first place. I have an anova and only use it's dumb features. It beeps when its at temp, it beeps when its done cooking and it beeps if theres an error, so why would I need notifications? and cooking guides are largely pointless because the process is always the same; heat water, vacuum seal food, put food in water, wait. I don't need another app harvesting my data, even if that data is just "eats perfectly cooked meat on occassion"
for sure, it's just that xrays are ionizing radiation and as such are extremely hazardouss. xray techs wont even be in the same room as the machine when its on. the glass they're looking at you through is leaded to prevent their repeated exposure to it.
2 words: time travel