- Telegram is non-profit.
- Telegram did not originate in the U.S., it originated in Eastern Europe.
- Telegram is not really a social media platform but more like a chat/conferencing platform--e.g. more like Discord. There isn't much in the way of "pages" or a profile. No one is going to know about your group unless you tell people outside of Telegram and provide the link.
- The only thing I know of that Telegram does to groups/channels contentwise is set a flag that they host pornographic content, and the only consequence is that the iOS app blocks the group. The PC desktop and web version are unaffected. Easy fix is to use Nicegram instead, and following the instructions to update a setting to allow all content.
Nicegram is also on Android (yay!!) and I hope they are able to innovate more in that space.
Channels allow unlimited members. Groups can accommodate 200,000 users. There's a lot of negative press around "far-right" and the "hate-speech" and even "encryption". Those arguments can be spun either way for any social media platform.
I'll be happy to help you find your feet. I am not sure I am allowed to share my contact details, but you can scan the QR code here: https://imgur.com/gallery/iQ7AFir
It's simple.