That is indeed their episode commentaries(Apologies for the late reply). It's like every time the word "retard" comes up, or during the moment where Krillin calls Freeza a FAG(Freaky Alien Genotype) and when Vegeta says that about Zarbon after killing him... They give a look of utter shame and attempt to justify it, when there's no need for the latter since their audience knows the time period and still finds their usage of certain edgy words funny. Curtis outright omits the usage of the former word during his separate reactions as seen earlier in the thread. And then there's his admittance to all the "Goku's a bad father" jokes during his reaction to the Cooler's Revenge Abridgement.