PRP for hair maintenance!

From digging around various hair forums it’s clear there is a generally negative feeling towards PRP as a treatment for MPB. From my limited knowledge on the area though it’s seems like this stems from unrealistic expectations around it regrowing lots of hair. Pretty much every study I can find on it reports statistically significant positive effects in terms of growth and density. Neither may be enough to make a different aesthetically but if at the very least it maintains then it seems like a pretty solid (though expensive) treatment option.

The studies all use fairly limited numbers of participants (< 50) and only really cover up to 2 year time frames but results are pretty consistent.

Am I missing something or is this a legit option for people who want to maintain but don’t handle the DHT blockers well?

PRP is thought by experts like me to have little value other than the microneedling that goes along with it.