In one case the “canceled” actually happens routinely. In the other, it’s just a loud man ranting but no one was canceled.
Regardless I fail to see how this refutes the claim that the right also attempts to engage in "canceling" of those they disagree with but is less effective at it.
For specific examples see the backlash to Gilettes 2019 commercial, or the attempted boycott of nike following their release of ads featuring Kaepernick.