Why is Kaspa not on Coinbase?

Can you shed some light on why Kaspa, a relatively new cryptocurrency, hasn't been listed on Coinbase, one of the most popular cryptocurrency exchanges? Are there any specific requirements or standards that Kaspa hasn't met yet? Or is it a matter of time before Coinbase considers adding Kaspa to its platform? Understanding the reasons behind this absence could provide valuable insights into the criteria that exchanges use to evaluate potential listings.