I only phone half a dozen numbers so I can manage that 😀 If I phoned hundreds of folk probably not. As for phones the market has overwhelmingly decided that for many 100's of millions of folk in fact phone cameras are plenty good enough. Using dedicated cameras is becoming an ever smaller niche with most gear being bought by folk already in the dedicated camera sphere. As with many things in modern life convenience trumps all for a lot of people . You can take a photo of your lunch and have it on FB or other social media in seconds 😀
As for the linked iPhone photos it is basically an infomercial also the samples posted are very small and low res, you find even the best photo images do not stand up to much scrutiny . You often find that there is a bit more to the behind the scenes setup, I recall seeing the making of a video shot on a previous iPhone, they had a full film crew, with a mountain of high end film equipment and professional editors, directors lighting etc. The promotion of the video gave the suggestion it was one guy handholding an iPhone when the reality was very different
If you shoot in good light , non demanding subjects without the need for a huge range of focal lengths including numerous specialist options. Phones can deliver what most people want, for me I detest Apple software and I would use another brand.