Not all passwords are equally valuable. Even if you are subscribed to 268 different services, it's quite likely most of them are not of particular importance to you.
One-time passwords are old as dirt. But they're also susceptible to MITM, and when TLS is vulnerable or you send through a plaintext/poorly encrypted channel (SMS), it especially makes no difference. Then, OTPs turn your mobile device or email address into a single point of failure, thus raising interest for their compromise.
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Not all passwords are equally valuable. Even if you are subscribed to 268 different services, it's quite likely most of them are not of particular importance to you.
One-time passwords are old as dirt. But they're also susceptible to MITM, and when TLS is vulnerable or you send through a plaintext/poorly encrypted channel (SMS), it especially makes no difference. Then, OTPs turn your mobile device or email address into a single point of failure, thus raising interest for their compromise.