Might work for first 6 months when all they do is sleep, eat, and lay around, but as soon as they are moving or aware that they can get things they want, predictability goes out the window. Although, I would not even bet on the first 6 months being easy due to sleep deprivation.
It's especially manageable if both parents are WFH.
Unless you and I have very different types of meetings, the ones I have are usually short and focused and I would be very annoyed if someone was constantly interrupted or distracted (just like I would be if someone is constantly checking their phone).
The vast majority of meetings are useless and unproductive, and if half the people on the call are muted the entire time nobody would ever notice.
I've worked with employees distracted by kids. Distracted by substance abuse. Distracted by mental illness. Distracted by video games, TV, something on their phone, or even just a basic disinterest in the job.
When we talk about the job market as a whole -- such as in the article above -- it doesn't help to focus on a hyper-selective section of capable, skilled software engineers. The vast majority of workers are in a much messier, less efficient and effective environment.
Maybe I should dig up some old IBM PCs, those things were tank-like, but likely the kids would start trying to beat each other with the keyboard.
Once they can crawl it's off to the races. Basically anything can hold their attention for half an hour while you take a short meeting.
I've worked from home with two infants, then toddlers, and now kids. Infants were the hardest.
Note that "kid safe" and "kid unchangeable" are not the same, be sure to leave things that they can safely mess up (boxes of Duplo are great for this). It helps even more if you've told them not to touch the Duplo, heh.
And if they have visual line-of-sight to you, they'll often stay calmer, but if you move out of line of sight then the howling starts.
I have not seen or heard of many businesses that are completely asynchronous.
