I have seen some of that over the last 45 years. From typically 2 months in Port to load, a month at sea and then 2 months to discharge, to Port turn arounds of less than a day to do all the maintenance on the propulsion systems, with only a fraction of the crew.
In some cases you can argue that newer ships have more reliable machinery with longer service intervals, but even 30 year old ships are sailing around with half the crew they had when new, while clocking up more running hours at Sea with less time in Port to do the work.
I sailed with one Coastal Tanker company that used to do a full overhaul of the main engines at every special survey/ 5 yearly dry docking and couldn't understand why all the pistons were seizing on the engine before they reached that time. I did some research and found that when the company set up the 5 year overhaul cycle, the ships only worked cargo between 8 and 5 Monday to friday and usually spent every weekend tied up alongside. Over the years, the Ports had moved to 24/7 working and the ships were carrying 3 times as many cargoes a year, steaming 3 times the distance and were now rarely in Port more than 12 hours at a time. As a result, the engines were reaching the running hours for a major overhaul after about 2 years and pistons were seizing at over double the makers running hours for a piston overhaul. (Caused by piston rings gumming up in the grooves, causing blow past which destroyed the Lube oil film on the liner).
Similar things happened on a car carrier company I worked for, they only carried 2 Engineers and a Motorman on each ship, and they could keep up with the maintenance and have reasonable rest when the Ports only worked daytime on weekday.
Once all the Ports worked 24/7 the number of voyages per year shot up, but one ship I was on did 5 Ports a week on a liner service, each Port having between a 4 and 6 hour standby in and out, and less than 12 hours alongside. Figure out how 2 Engineers can do all the standbys, day work at Sea, answer alarms and do evening Rounds, and stay within the hours of rest/ work regulations? Even without pulling main engine units in Port and overhauling generators at sea.
The company gave us hire cars to get home, the cheapest way to travel, and I fell asleep at the wheel once and totalled a car, fortunately I got away without a scratch, but I am sure a lot of people must have had similar experiences, day work all day in bad weather alarms all night standby early in the morning, clean your cabin (mo Stewards any more) handover at midday and get in a car and drive for 4 hours...... recipe for disaster.
It is always better to ask a stupid question than to do a stupid thing.