I was on Parler and found it to be no more an echo chamber than Free Republic. Conservative articles being commented on by conservatives. In fact the same people I followed on Parler are the people I follow on Gab. In terms of content I find Gab and Parler to be identical except I run into a lot more antisemitism on Gab.
Free Republic is worlds apart from what those social media platforms are. You really can’t compare. FR is basically the dark ages and simply a format to post articles and comment. Not really a lot of easy interaction, not in the same way.
I have not been on Gab much at all. I got signed up but it was lagging so badly with all the new traffic I didn’t hang in there, waiting until they got more juice.
That is unfortunate you are running into antisemitism. You should report it to Andrew, he would want to be made aware.