Earlier quoted context omitted.
I agree. It would be very dangerous if people in charge, say, prohibited Apple (a private company) from removing Parler. Thankfully, the 1st amendment is still in power and Apple is free to express itself as it sees fit.
You're arguing as if there were no precedent for this, but there already are bounds to how Apple can "express itself". They cannot refuse to serve people of a certain race for example. So are we in a dangerous place now, or should Apple be allowed to exclude people by race?
Race is a protected class per the law. Parler is not