Probably the thing that bothers me the most is people advocating cry-it-out.
Just my experience, if it brings you hope for the future: When the baby gets older it lessens and by the time they're 2-3 it's just a trickle. By the time you have a second child (if you're planning a second) stupid comments from people is a non-issue--whether they assume you know what you're doing because you have 2, or you just don't care so you're immune, it's hard to say--probably both. But my second is almost 13 months old now and I can't remember the last time I heard a stupid comment from a stranger. Now I just get the "oh my, you've got your hands full!" comment every time I leave the house.
Yeah, I almost NEVER get comments anymore, which I am SO glad about, these comments used to infuriate me. Especially because I read and researched so much about my parenting decisions, and these people were just spewing stuff they had heard before. ARGH. Now all I really hear is "Wow you homeschool? That is so much work" which doesn't make me mad as much as baffle me. Really, we spend two hour (at the most) doing formal homeschool-y type stuff, the rest of the day my 8 yo is just a part of our normal every day life. I suppose those people think I am doing the conventional school at home thing. Oh yeah, I get the hands full thing too, but that I like because it makes me feel like maybe someone understands.