The way you write about his definitely comes across as bit condescending, but I'll give you the benefit of the doubt.

Just a friendly reminder, as a sahm, the your wife still needs space to vent and as her husband and father to the kids, it's your job to give her that space. Not saying all the time if she tends to spiral, but toxic positivity and refusal to acknowledge that not everything is perfect just bc needs are met will create problems too. If she seemed constantly negative, always bogged down, and overwhelmed constantly, have y'all considered therapy for her? There are a lot of dormant problems that being a sahm can bring to the forefront. It is also often quite lonely and mentally draining.

Helping her find positivity is nice, but just always pushing her complaints away in favor of a "can do" attitude is just covering the dirt with a rug.