It would be much easier to take out the current mobile carriers than a Starlink sat. The code that runs it is of terrible quality, maintained by incompetent com

It would be much easier to take out the current mobile carriers than a Starlink sat. The code that runs it is of terrible quality, maintained by incompetent companies with no incentive to deliver a quality service due to their oligopoly and the regulator being asleep at the wheel. The reason nobody is doing it now is because it's a one-shot weapon. You fire it once and your target will wake up and actually do better (rather, the government will force them to on national security grounds). However, non-disruptive attacks on mobile carriers are common. I'd wager any competent intelligence agency has a full view of worldwide SMS comms for example. Similarly, non-government bad actors also have insider access via malware or bribery.