Number 1 depends on how you're raising your kid. Working poor parents don't have the luxury of getting organic everything or making sure their baby's skin never touches anything but 100 percent unbleached natural fibers. This is aimed squarely at crunchy yuppie white moms.
Number 2 is a "well duh" comment. Little humans are wired to stay close to their caretakers when they're tiny. It's survival. Don't bother taking those vacations and traveling the world with a toddler. It's more life experience, it enriches them, blah blah...but they also have no context for comparing foreign cultures or flora/fauna. They'd be just as happy exploring the plants, animals, and people of your immediate area. They don't know the fucking difference, and they don't travel super-well, so just accept that your world has shrunk considerably for a few years and just stick close to home You'll be doing your fellow travelers a huge favor.
Number 3 is another "well duh". Their sleep and wake cycles are still closer to a baby's. They run themselves out, they sleep. They get up and repeat. This is your life for a few years. Get the fuck over it.
Number 4 makes me feel sorry for parents, because it reminds me of people who're excited to have kids because it means they get to do kid things like draw, play with Lego, etc. "They make you use your imagination" means that the author thinks imagination stops when you're a working adult. There's no rule saying you can't daydream and imagine as an adult, just like there's no rule against the Playmobil, wind-up creatures, and Lego figures that populate the shelf of my desk.
Number 5...I dunno. Toddlers live in the moment because their brains are underdeveloped and don't understand time. I'm glad I can keep a schedule and plan ahead. And while I'm a creature of habit, breaking with a schedule and "living in the moment" is probably less of a big deal for me because...well, I don't have kids. I don't have someone constantly trying to tear me away from what I need to get done. And frankly, Number 5 doesn't sound so much like "life lessons" as it does "toddlers have no concept of time or impulse control, and will try to do what they want, when they want. You'll be left dealing with the aftermath".
Number 6 makes me laugh. Yeah, the toddler doesn't care if you haven't showered and have bags under your eyes. But enough days of that and you're a miserable mofo, no matter now you try to spin it. Mom raised the three of us and no, she didn't run around looking like June Cleaver or Donna Reed, but she kept herself put together.