There are base level standards that most (intelligent) people have when it comes to dating. You're probably not going to date a homeless person, for instance. Or someone in jail. Those standards dictate who you ignore, who you give a chance to, and who you desire. For many women they're looking for a guy who fits some base level standards or expectations. Good job, own place (house, apartment, condo), car (depending on the city), good hygiene, personality, attractive/handsome, etc.
Same applies to men on different levels and a major one is attraction. This woman is obese. She's not attractive due to that, and while dressing nice and having a nice hair style is cool...men are looking for the whole package. Obviously there are men out there who like overweight women. Whether those guys are on dating apps...I don't know.