It is kind of annoying that Steam doesn’t enable the usage of third-party OTP apps. To be fair, when they first implemented the feature, that wasn’t widely used and plenty of websites only enabled the use of one specific OTP app like Authy or Google Authenticator. They recently added a QR code login feature, which makes sense, but that still shouldn’t stop them from enabling MFA via third party OTP apps.
It is kind of annoying that Steam doesn’t enable the usage of third-party OTP apps. To be fair, when they first implemented the feature, that wasn’t widely used and plenty of websites only enabled the use of one specific OTP app like Authy or Google Authenticator. They recently added a QR code login feature, which makes sense, but that still shouldn’t stop them from enabling MFA via third party OTP apps.