I'm still trying to figure it out, but I guess not. The only thing I'm sure about is that you will know whether the OTP code has been sent by Telegram or a P2PL relay
Yes, and you pay for those sent SMS, 150 per month (may include 'non-free' International as well), and than you receive pretty useless premium subscription. Privacy wise it sounds very bad, as your number is exposed.
You can decide to send sms codes only within your country. You decide whether the tradeoff between costs, privacy and features is worth it. Sending 150 sms a month (or a magnitude more) would cost me 0 €. I find some of the premium features worth paying for. But I would never relay OTP codes for telegram
Someone could benefit being relay, I just won't share my number to the world, lol. I have an option to make virtual numbers 1$ per month, maybe that could be an option if subscription could be received for another number. But I dont care much about subscription.