Agreed, If you look for issues, you'll find them.
Anecdote: My wife had a high risk pregnancy. They did more than the usual scans and tests, and at one point we were told to go immediately to the NICU, spent 48h there , more tests. None of the tests really showed anything other than she was different than the normal pregnancy (I won't get into the specifics).
In the end, we have a healthy child but it was a lot of pain just going through test after test just because things were out of bands (my words).
I'm grateful that modern science can monitor and predict such issues, even if in the end there's no problem. The alternative, as we know for thousands of years without modern health care, is far worse for women giving birth.
I'm in full favour of learning better and better tests. Over time we'll have enough data to know what's urgent and what's preventative. Losing friends and family to avoidable health issues is too heartbreaking.
Sure, but in this case, there was a good reason for the additional tests: a high-risk pregnancy. And still, the outcome was stress for nothing. Now, imagine thousands of perfectly healthy people doing full-body scans every week just because they can. This actually carries the risk of jamming real health care, because those perfectly healthy people will undergo additional clinical tests for nothing.
Imagine all the data that gets us towards those scans actually being meaningful. Don't treat them like scans to find problems but scans to learn from, collectively.
As I wrote in replies to other similar comments, this would be the case if this technology was presented as an opportunity for researchers to run more large-scale studies. This isn't however the case, it is instead presented as a shiny toy for fancy spas.