This is not “exactly this.”

Teller is giving users additional access modalities to services they’re already separately “paying for.” The directly analogous format would be if Teller was allowing you to store your money at Bank of America but Teller was preventing BOA from collecting revenue from you.

No. It's like if teller allowed you to make a boa account as well. As if this one small feature makes it some egregious criminal activity.

Many beeper mini users already have apple devices + Eric in his post said he's willing to pay some reasonable fee.

Nobody pays for iMessage directly.

Nobody pays for bank accounts directly either.

Oh Eric said he’s willing to pay? Guess that counts as a deal then!