It's up to parents to decide what they dress their children in, obviously, so long as the little one is safe and comfortable.
We all have different tastes, and although my children were always spotless, well-dressed and smart, I erred on the side of slightly plainer outfits. I don't think my babies were in the least bit worried by this, and I didn't seek to impress with lavishness of presentation. I'm not a joyless snob, but my children were beautiful just as they were, and didn't need hundredweights of frills and furbelows to prove it.
Some might think me dull, and they are perfectly entitled to that opinion - just as I am entitled to think that certain baby outfits are eye-scorchingly inappropriate, ostentatious and possibly uncomfortable.