The body is constantly changing. We already know about physical and chemical abnormalities in the way your body works affects your "person" and we can sometimes address them with surgery or drugs. The physical body's limits impact the observed brain. If uploading is possible, if there are some examples of working cases, if I don't hurt anyone why not try it?
Is this the Ship of Theseus, or is it a slow but nonobvious death?
Rather funny, BTW, compared to most works around a similar premise.
Which is just one step closer to the simulated hell for uploaded consciousnesses that get naughty, from Surface Detail by Ian Banks.
"As a personal comparison, my total lifetime output of published material has been a bit under 3 million words, and over the past 30 years I’ve written about 15 million words of email, and altogether typed perhaps 50 million words—and in just the past couple of years I’ve spoken more than 10 million words on livestreams. And, yes, I’ll train a bot from all of that."
This actually has the potential to be useful - imagine a virtual assistant that's literally trained to think like yourself (at least wrt public perception; although you could feed it personal diary, as well).