The season has been fairly dull up until the last two weeks. I believe that the crew(s) had no problem with them filming Phil's demise, since they have also filmed some at-sea rescues of capsized vessels. Some of those clips actually showed bodies floating in the water, so I'm guessing that Discovery has no moral issues with airing Phil's final days.
As an aside, Deadliest Catch, 24, and re-runs of Band of Brothers are about all the series I get to watch at home. So, while I do regret that Phil died (it's a wonder he lived this long, frankly) it is adding some deep drama to the show. Add it to Jake's dad gone missing and he's out in the middle of the ocean, Jonathon 'retiring' from the Bandit and Mike's pending promotion to captain, and it's suddenly turned a boring season into a memorable one.