The sports you find laughable are taken seriously by the persons who compete in them and follow them. You do know, I hope, that some people find running pretty risible too.
You're right that biological differences between the sexes don't appear to give adolescent and adult males as much of an advantage over females in darts as in sports like running and swimming - but that's definitely not the case in snooker, disc golf and archery.
Men and teenage boys have a huge competitive edge over women and teenage girls in snooker, disc golf and archery due to biological factors like males' far greater upper body strength, lean muscle mass, lung capacity and throat size, taller height on average, wider shoulder width, longer arm length and reach, bigger hand and finger size, far greater grip strength - along with males' considerably lower rates of respiration and heart beat, different center of gravity, and the different nature of male and female muscles, tendons, connective tissues, muscles, levels of muscle memory, etc.
Moreover, males have major advantages in snooker, disc golf and archery - and to a lesser extent in darts - because they lack female breasts that can get in the way, female metabolism, natural female tendency to put on on body fat and female distribution of body fat; and because as males, they don't go through female hormonal cycles due to ovulation and menstruation; they don't have periods; and they never ever have to deal with or even worry about pregnancy, childbirth, miscarriage, abortion, maternity and breastfeeding affecting their ability to train and compete at any time over the course of their sports careers.
Also, for the record: the sports you find hilarious are fairly lucrative relative to some other sports. The top prize in a darts tournament is currently £500,000 (GBP) - which is also the current top prize for professional snooker events. By comparison, the top prize at the world archery championships a relatively paltry $30,000 (USD). Beyond the prize money, people who excel in these sports often earn good money from sponsorship deals, ancillary awards, appearances and speaking gigs too.
Natalie Ryan, the male athlete with a trans identity who won several US women's disc golf tournaments in 2022, took home $44,000 (USD) in prize money from those events. The top 20 male players in professional men's disc golf average more than $60,000 per year in prize money. Maybe that's chump change to you, but most people would consider winning that amount of dough from throwing a frisbee around on golf courses to be a pretty sweet deal.
The prize money in professional women's snooker is still much, much lower than the prize money in men's snooker, in large part because women were only given a place on the world snooker tour for the first time in 2022. The top prize for an event in women's snooker on the world tour is now £15,000, a tiny amount compared to the £500,000 top prize in men's snooker on the tour.
As it happens, the top two players in men's pro snooker consistently earn in the million-pound range from being snooker aces. Even as you snort through your nose that sports like snooker, disc golf, darts and archery are hilarious, a lot of the guys who perform at the topmost levels of these endeavors are laughing all the way to the bank.