I’m really glad I read this thread. I had no idea that new GPs were being told to do this. For a good while now I have been avoiding younger GPs because all the newly qualified ones, by asking this question virtually exactly as OP has phrased it, come across to me as totally out of their depth and like they haven’t got a clue where to start. They say this immediately after I’ve told them what my symptoms are so it’s very off putting when they don’t even go straight into a physical examination but just ask that. Of COURSE you are going to feel like there is a suggestion that you’re making the symptoms up, or exaggerating them, that the problem is too trivial to take seriously, that you’re wasting the GP’s time (which, by the way, we know is precious), or that they don’t have the first clue where to start.
If I go to an older more experienced GP, I know I’m going to get something along the lines of “what have you come to discuss with me/see me about today?” Or “how can I help you today?/what can I help you with?” Then I tell them my symptoms and concerns, they probe further asking about any family history etc, do a physical exam, tell me what they think it might be and what their suggested plan of action would be eg a prescription or further investigation and AT THAT POINT ask me my thoughts on their suggested plan and did that fit with what I was hoping for? Also at the end “is there anything else I can help you with?”
I think from reading this, maybe new GPs maybe don’t have the confidence yet to go off-piste slightly from how they’ve been trained to say things. I’m sure eventually they’ll realise that it needs to be phrased slightly differently and used at a suitable point in the consultation not as soon as you’ve told them some symptoms. That’s if they have any patients left other than hyperchondriacs who are happy to see any GP, in which case it would be appropriate to carry on saying it in an abrupt way at the start of the consultation! 
Seriously, though, not everyone has a natural bedside manner. Not every young GP has common sense when it comes to people skills. They may be the type who was really clever at school and flew through all their exams with top grades, making them extremely knowledgable on the clinical side but it doesn’t mean that they automatically have the people skills to match. I do think that needs to be emphasised during their training. I mean, what happened to “first do no harm”? If you’re already getting people’s backs up so much within 2 mins of getting in the room that they go away not having had their issue resolved, or in mental health cases, considering that they are unhelpable and consider suicide, then you are doing harm!!