Capitalism is a tool. Being pro-capitalism is like being pro-circular saw.
What you see as “anti-capitalism” is people pointing out that using one tool for everything is, at best, inefficient… and, at worst, dangerous.
Insisting that everything must be quantifiable and min/maxed according to market demands is nonsense, and hurts people.
There are things we value which are not profitable. There are things that are profitable but not valuable.