On the contrary, this seems to me a very healthy way to live. Until the last 15 years, very few people had their views expressed beyond a narrow circle. Standing on a public stage and shouting your every thought would have seemed crazy.
I don't think Speakers' Corner is remotely comparable to how social media works today.
Very few people spoke there, and very little of what they said was distributed beyond Hyde Park or recorded for posterity. I'm lucky enough to have seen a couple of people speak there, and they were both rather... eccentric. And even they didn't stand there all day, every day giving their opinions on everything that happened.
