Because the decisions should be left to those of us playing the sports. Not bystanders trying to impose their own agendas on to activities they don't even participate in.
The government doesn’t have to leave the sphere. It just has to manage the market. For instance, a specific amount of space in a park could be allocated to dynamically priced programming. This could be auctioned on an annual basis with teardown costs pre-allocated. Then you don’t have the argument over whether tennis or pickleball. It could be cricket or sepak takraw for all we know.
Proponents of various sports could group together to share the space. This is obviously far superior to the communist style committee allocation.
And obviously the government should not fund sports. Creating the environment where sports funding can occur by ensuring a framework for contracts and so on, yes. But actually deciding that baseball or football or basketball need to be played is patently ridiculous.
You can make the decisions, but you can't make the audience (a much larger body of people, who overwhelmingly do not participate in the sport, at least not competitively) agree with (or care about) your decisions or reasoning.
2) why do you think those who care about this don’t care about other issues?
3) this hardly makes the headlines, and wont stay there for long. It doesn’t get outsized attention
But alas. It's easier to spread hate than enact positive change.