This was explicitly one of the things people were worried about when he bought Twitter. If you didn't notice this your personal filter bubble is giving you ideological blind spots.
This assumes filter bubble theory is true, which it isn't, because being exposed to things outside your bubble mainly makes you resent them even more because they're annoying.
Twitter now bravely, aggressively exposes me to both left-wing and right-wing politics [1]
[1] for a country I don't live in
Yes when I could still view tweets without a login I got some shit about some villian called Dark Brandon and a deranged woman using steroids called Margory not from Game Of Thrones.