I don't know if I fully agree with that, as I said there are all levels to be considered and some of them can take a lot less time...
I have a fairly large flock of chickens, guinea fowl and peafowl as well as goats and llamas... I also have the incubator running and brooders with young birds all summer...
I have done a lot to automate the processes to save me time, I also don't treat the animals like pampered pets, nor do I treat them at the other extreme as just livestock, I work in the middle...
At the end of the day, all combined I probably spend about an hour a day taking care of them all... And every so often I have to devote maybe a weekend day to something like cleaning, maintenance or what not...
I have done and continue to automate processes to save me time, switching over to the deep litter method for birds was a huge time saver as was automating daily watering for all the animals... They all still get daily check ins and some socialization but I don't regularly spend a lot of time with them...
I understand others will spend a lot more time with their animals, but I'm a stay at home father taking care of three young children, my 'free time' is severely limited thus the compromises.,, ..