If your customized experience on a website is drastically different from experience of many other people on that same website, you by definition operate in a filter bubble, regardless of whether it has anything to do with politics.
You cannot use this customized experience as the sole argument to imply that experiences of other people on that website are somehow abnormal. When customized feeds and algorithms are in play, there is no such thing as "normal" experience to begin with.
Another layer to this issue is the fact that Twitter (unlike some message board from early 00s) is big enough to influence society at large, so while you might decide to ignore a particular drama, the drama might not ignore you. Because of that a lot of conventional wisdom about "The Internet" doesn't really apply.
You cannot use this customized experience as the sole argument to imply that experiences of other people on that website are somehow abnormal. When customized feeds and algorithms are in play, there is no such thing as "normal" experience to begin with.
Another layer to this issue is the fact that Twitter (unlike some message board from early 00s) is big enough to influence society at large, so while you might decide to ignore a particular drama, the drama might not ignore you. Because of that a lot of conventional wisdom about "The Internet" doesn't really apply.