even if they were all users (they aren't), it's relevant how exactly? If Saudis who are 2nd biggest Twitter investors use Twitter it doesn't make its business model better.
It's relevant because they aren't just VC bros or Saudis. It's just 670k. I'm not sure why you're so worked up about it or why you think Kagi shouldn't get additional funding.
Publicly traded means that your primary customers are Blackrock and Vanguard, the whole concept of individual investors is just investment firms fooling people into thinking they have some influence over a company.
You think being publicly traded would be better? That just gives a business perverse incentives detached from the quality of the business's products/services.