'm one of five who holds 21/22 
@AbstractChain
 Badges. It's the gamer in me 😂

Tips: 
// Flash Badges - Easy to get. Key is to be alert and do the app task asap as it can take some time. 

// Secret Badges - Some harder than rest. Key is to assess both time and money investment according to your risk tolerance. Badges like myriad, gacha, multiplier needs money however there is non zero chance to bet net positive in the end. Badges like threadoor, clippy need time and effort that not everyone can put in. 

I don't know what the Badges will yield in the ecosystem but it will be valuable or else they would have not been SBTs imho.