Like everyone has suggested, ignore these people. If you want to treat your baby like a baby, it is your perogative. I have a stroller, 3 carseats, tons of t-shirts, sweaters and coats, etc, etc, etc. lol
If someone is going to make fun of me at how I spoil my dogs, I can for sure make fun of them spoiling their toddlers. They have tons of toys and clothes and high chairs, etc., etc, etc.
See what I mean?
Enjoy your baby and ignore the people who have no clue what these little ones bring to us, love, joy and happiness.