Now that Spain is flirting with the idea of blocking Telegram, it's a good time to remember that having independent sources of applications is not a whim.
Not just for the most obvious reason, accessing the apps themselves by controlling the "official" stores. Also, for the impact on content diversity that limits access to other tools, such as https://mtproxy-proxy-for-telegram.en.uptodown.com/android or any other escape route from the control of parties, governments, or companies.