Now, I do think that one should do a little bit of homework to give a somewhat structured answer to "Tell me about yourself", but there is such a thing as too perfect, at which point it becomes jarring.
And as another person argued correctly, I probably didn't fully succeed at that.
Just because an answer is structured, doesn't mean it's dishonest.
When I was structured I did use a variation the STAR method when they expected me to. Having a method like that makes things quicker to go through, as long as you make it your own and own it. I adapted the framework a bit by swapping the T (Task) for P (Problem) as it sense to me why you'd need to emphasize the task as opposed to the problem you'd be trying to solve. In rare cases I also adapted it to the SPARAR method, since the result made the problem smaller but didn't fully solve it yet.
I prefer to structure things on the fly though without a pre-defined framework.