I checked their signature spreadsheet and they don't have a lot of participants and why is that? they have an amazing +20 points per week if you wear their avatar and a referral program that can give you 20% of your referrals points as bonus to you.
Unfortunately not all of us are full members like you, I would probably be Senior Member now if it wasn't for the merit system
I can't believe how little members there are in the airdrop though, very surprising - maybe TaChain is yet to come out of its shell