I wrote a book on low power AM broadcasting. It's pretty rare that pirate stations cause meaningful interference, they operate at very low wattages (sometimes 100 watts or less) and usually have low pass filters installed in-line that prevent harmonics interference, whereas commercial stations operate at 100,000 watts and are far more likely to cause interference issues even when designed correctly. It's more likely competing FM stations calling in to complain than the airport calling in to say their planes can't land.

Not making an ethics call on pirate radio, just commenting that the argument that they regularly cause dangerous interference is somewhere between nonsense and propaganda.

I think the bigger critique I would have is why even bother to do pirate stations anymore now that the Internet is here and it's much easier to subvert corporate media that way anyways. Clear Channel's radio monopoly went from a dangerous culture lock that could ban Beatles songs "because of 9/11" to useless junk pretty quickly, there's a reason I got out of the space a long time ago. The commenter alludes to this when they describe how important the station is by referencing their Spotify playlist (BIG 103.3, which doesn't look dancehall, subversive or frankly very good).