[1] https://songmeanings.com/songs/view/52876/ is just an example of such a site
Even using your songmeanings.com link it doesn't appear that the common interpretation is satirical in nature.
I think you are on to something though with respect to linking to Wikipedia, the time has probably come to stop linking to any potentially polarised/polarising page. I tend to link to Wikipedia out of habit and also laziness but it has lost whatever semblance of neutrality it had. Allmusic [1] has a page on the song but it it quite bland. Rolling Stone claims the song was originally called "Ice Age" and the lyrics are essentially a radio broadcast from a dystopian future that was easy to envision at that point in time [2] - which is the reason the current crop of panic porn reminds me of this track.
[1] https://www.allmusic.com/song/london-calling-mt0008645476
[2] https://www.rollingstone.com/feature/clash-london-calling-al...