I tend to agree. If you were posting a photo of some quilted fleecy thing, I'd be like 'yikes!', but that looks so thin, I can't imagine it would make a difference.
Sometimes I'll let DD wear a thin fleece coat in her carseat because they don't require me to adjust the straps. Although usually she doesn't and we put a blanket on top of her instead.
SAHM to Magnolia May (09/10), Luke Russett (04/13) and expecting 11/16. Wife and best friend to my airman.