But that wasn't the topic she had tried to address. She asked him if he finds her attractive and he said yes. If he said no, you would all be here saying how awful he is and that a real partner would love and like her no matter what etc etc.
I think if OP sat down with him to have a frank discussion about weight loss and how he could support her in her journey, maybe he will be on board - we don't know because this hasn't yet happened (or at least OP didn't mention that in any of her posts).
OP, I am not sure what you are trying to get from this second post but you have already received almost 1000 replies in your previous one, clearly showing you that the situation can be seen and understood from both angles.
I think you have a communication issue, mainly, but I wouldn't say he has behaved particularly badly towards you.
Facts are that:
You agreed to do this together and you have passively let him do all the planning. Understandably, he was excited about visiting Lisbon and eager to explore the city and all its beauty on foot (as it should be done) with YOU.
Once there, you were visibly struggling and unfit and although you "kept going" for the first few days, it is clear from your comment that it was always a big deal (suffering with your feet, legs, needing constant breaks, not being able to face another 30 mins walk etc) so I assume that those first few days of walking together were also not a breeze. It is, objectively, a small amount of walking you did on a city break so he clearly wasn't expecting that this would have been such a major issue for you and he was probably surprised and disappointed. To quote your OP, you said he wasn't being nasty about it, just visibly disappointed. I think that's normal.
You then decided to sit by yourself in a cafe and he continued to walk around the city by himself. You chose to do that, you could have also said "I'm taking an uber, see you at X in 30 mins" so you could have continued to explore together.
It isn't your fault if you haven't been able to handle this holiday - I assume this has been a massive wake up call and I sincerely hope you are now on a path to addressing these major health and weight issues asap as you are ruining your life and you already know that.
I can see how it was upsetting for you and how you wished he said "forget about it all, let's jump on a taxi together". I really do. But he didn't and you just need to either get on with it and move on or if it is really such a major deal, then maybe you need to reconsider your relationship, but only you know that.
What I and other posters have been trying to do is to make you see the situation from his point of view as well. I, for what is worth, would have been also disappointed if my partner was unable to keep up with 10K steps a day whilst on a city break.