You don't know what you are talking about. I have posted on dissenter and don't have a browser extension. I don't use a phone for internet, but I doubt any extension would be needed for a phone either.
From the article:
"Using a simple desktop browser extension, conservatives can literally bypass all of the big tech companies trying to censor us, and have an open, free discussion. Even news sites that still have comments sections are known for heavily editing them. Twitter and YouTube have been accused of censoring comments, and manipulating their algorithms to suppress conservatives...Just download the extension, install it on whatever browser you’re using, and voila – you’re now 100% free to comment on literally any URL online, with zero fear of censorship."
Why are they saying that?
OK. Doing a little more research it looks like there’s a web app you can log into and use to post and view comments in lieu of downloading the extension.
The article didn’t mention that.