What I found interesting while reading this was what it _didn't_ say. Specifically, they mention that calves are kept with their mothers for 5-6 months, but what happens to them after that? They also don't say how long they keep the cows themselves for.
Typically male calves are sent for slaughter [1], and females raised to be dairy cows themselves. Furthermore, dairy cows are usually slaughtered after only 5 years of life [2], while the natural lifespan of a dairy cow is ~20 years [3].
[1] http://ontarioveal.on.ca/all-about-veal/the-real-deal-about-...
[2] https://albertamilk.com/ask-dairy-farmer/how-long-does-the-a...
[3] https://animaldiversity.org/site/accounts/information/Bos_ta...