At first I thought it was only Java edition but now it seems that all platforms will have it. We have to upload things like Digital ID or other methods to Yoti, a third party company, to verify our age if we want to use social features such as the chat. This means if we don’t even in single player the chat will be removed. Then we can’t even use coords or commands in Java single player. As of now it is unclear how and when exactly they will add this but they said on their website it is next month sometime. Not sure if it will be online only and if it will be a certain update or all updates. I doubt mods will be able to get around this. Mojang will probably tell them to be removed.
The chat currently is how you enter commands. But guess what… Mojang has the ability to change that. You know, like they’ve been changing the game for as long as the game has existed.
You litteraly have no idea how they’re going to implement this change. It’s stupid to assume that they’re going to block the chat window without any other way to run commands. You are clearly experiencing a severe lack of critical thinking skills.
But sure, go ahead and assume the worst