I saw this online today and was alarmed to say the least.
Given that the origin of the post has not been CCR diving long enough to have a cell expire on age, nevermind one reach 30 months, their blasť attitude must have been indoctrinated somewhere. I have seen similar mindsets from revo divers elsewhere. How are revo units the only ones that are immune to 12-18 month cell rotation plans?
That's the beauty of having 5 cells. With 3 you have to pre-emptively change them. With 5 you can see if one's failing and run them for longer.