The almost complete abrogation of any sort of self responsibility on these forums is truly breathtaking. It is not the fault of flying schools or sales literature, or pictures or promotions. It is your fault as an individual. Purely and simply your fault!
Flying schools have as much right as car salesrooms or supermarkets to exist. They can dress up their products, and package and promote them how ever they like to make them as enticing and appealing as possible to the customers who might walk through their doors.
If you believe that parting with tens of thousands of pounds will not only provide you with a hundred hours or so of flight and ground training, but will also have commercial airlines swooning at your feet, then enjoy the dream, because clearly that is what you are paying for.
It has always been, is now, and always will be a case of caveat emptor or let the buyer beware. Research what you are buying, before you part with the cash, particularly where large sums of cash are involved. Despite protestations to the contrary, very few people who contribute to these forums appear to do anything like that. They only want to hear what they already choose to believe. Any cautionary advice is labelled as "negativity" or some other buzz word. These people want to be seduced and are ripe for it.
Flying schools are busineses just like many others. They sell a product. You want to buy it, good! They are happy to dress up their marketing with pretty pictures of what that product may do for your life, but that isn't what they are actually contracting to sell you in most cases. So do your research, pay your money and take your choice if that is what you decide. If your own particular dreams and fantasies don't turn out like the ones in the brochures, too bad.
Flying schools are in business to sell you a range of products. As a buyer you have a right to expect them to deliver that product. They cannot sell you a dream, because that only exists in your head. Marketing is a facilitation tool that uses pretty pictures, soft lights, nice smells and the exploitation of irrationality to place an often mundane product in an attractive wrapper. If you are over 18 and are unable to recognise this concept, then you are not yet ready for this career and many others besides.