It's a useful framing to to have, because "reach" is indeed the issue. Analogies to "guy yelling in the town square" aren't valid with Twitter because the town square doesn't have algorithms that moderate how often the town crier is audible to the public. And the town square also never had automated bots that parrot the criers' views (or contrary view) at zero marginal cost.

if Musk takes over Twitter, we'll be able to see how much 'freedom' he tolerates when the topics are things he has personal interests in.