Fun subtitling “fails” like these are almost always not actually a mistake by the channel, but, less excitingly, usually in the home TV or set top box that creates a unique, one-in-a million error just on one person’s screen… which social media effortlessly lets millions of others enjoy too.
Tech details for the interested: (1) AppleTV/iPlayer: Apparently a software bug. (2) Sky Glass: The Smurfs was the programme before the movie. Some kind of buffering issue. (3/4) DTT: Subtitles from a programme airing at the same time on a different channel in the same digital multiplex.