That would be impossible to enforce. There's no way to tell if someone else is logging in to an account to complete these tasks. IPs tell you nothing useful due to VPNs or Tor. This could also be done by relaying the questions to the third party over a platform such as Telegram or Discord, so bypassing the account login altogether.

I wouldn't be against having to prove some basic bitcoin knowledge in addition to earning merit in order to rank up from newbie, but providing it as an alternate route to ranking up (i.e. bypassing merit) is too open to abuse.