Your response reads like a paid AstroTurf comment.
Putting the ability to block or restrict receiving something behind a paid subscription is batshit crazy. That is an extremely shitty thing to do and will just result in people not using the service entirely as soon as they try to block something like spam or harassing messages. Just because you don't run into any problems with how you use it, that doesn't mean there aren't issues people run into daily.
Premium subscribers can control who is able to send them voice and video messages.
https://t.me/premium/134 (link tries to open in telegram app if you have it installed and may display differently than if you do not use their service).
I'm not going to put any more effort into this conversation for a service that I will never use clearly charging a premium for basic privacy/safety settings like controlling who can send them certain types of messages.