I am incredibly bullish on the upcoming changes to channels. Creators will have much more granular control over their communities and the experience for users will be substantially different from alternatives. A better version of Telegram—all onchain.

Founder of the /success channel. Search Marketing Director at Kraken Kratom. 

That's an interesting pov. It's like an X, TG hybrid on steroids If they allow open channels in the future.

Open channels will technically be possible day 1. Owner can just put a public invite link in their channel description. I believe we’re getting some additional creative space at the top of the channel for more info too.

venting

True. My only problem is for channels like /venting many people may want to cast to it from time to time so they should be members but they may not want to be followers! 
Following a channel affects your feed and people will not want venting from other people to appear on their feed! 
My idea of an open channel is a channel where people can cast in without following which is not possible atm.