I mean, certainly you can get bad meat, and maybe it's easier to conceal in a burger than in a steak, but ... how about literally all other processed meat that is invariably processed more than burgers? Salami, sausages, hot dogs, ...
I personally love burger, and consider it one of the finest foods.
Fortunately, there's a very easy way to know the quality of a burger - if they ask you, how well you want it done, it's high quality! Shitty burger places like McDonalds and Burger King don't want to risk selling you a medium-done burger... Funny enough, UK is one of the better places for high-quality burger, much better than e.g. Switzerland or Slovenia! My favourite in London is (was? 2019) Honest Burger...