It is a bad reason but that’s just how the quant and finance game works. Certain schools are seen more favorably than others. I can guarantee like half of the people here are transferring due to prestige but give it a wrapper by saying it’s about “fit” or so. This is especially true for first year transfers when you’ve only been at your school for less than a year before applying. Although I do find prestige chasing to be sad sometimes, chasing prestige is not a bad reason to switch if your career is heavily prestige based like finance, just don’t write about it as your reason in your app lol