I think the reason I'm still only following 120 people is because Mastodon has the "Show Replies" setting.
Steven 
@dave @realcaseyrollins Mastodon by default is basically 1:1 with Twitter. It shows every post of everyone you follow, and only the replies between the people you follow. Unless there’s some setting I’ve been missing for the past half year.
@niggaflamebuttholeaids @realcaseyrollins Maybe I'm crazy but I don't remember Twitter showing every reply. I think the algorithm did it sometimes but it seemed like by default that wasn't the case.
@dave @realcaseyrollins It doesn’t, but neither does Mastodon. It only shows replies between the people you follow, unless you manually click into the thread.
PleromaFE does have the option though. I was going to ask Alex to add it at some point
@realcaseyrollins I mean on Twitter I was following like 400 people, but Twitter doesn't show every reply in your feed like Mastodon does. So my feed is busy enough the way it is, that I don't feel a strong desire to find more people to follow.