We sometimes say "No good deed goes unpunished".
I've seen plenty of 2 and find it fascinating how instincts for feedback, including my own instincts which I need to improve, can be so counterproductive towards the hardest working, most committed and effective people.
Not just critical feedback, but assistance, resources and support also follow a similar pattern.
If someone's working hard on something and making clear progress when others are not, from time time they slow down or even just appear to. It's inevitable even if just due to random events.
Occasionally I've seen someone with a history of conscientious and effective work, going through a rough time, a difficulty, or whatever it may be, and be offered straightforward, non-judgemental, kindly meant assistance. That's really nice when it happens for real. But it's so rare. Not many people seem to have it in them to just offer simple agenda-free help to someone without creating more burdens.
Much more often, I've seen the conscientious high performer given gradually increasing harsh feedback even while they are still ahead of others around them, mixed with offers of "help" which are more of a burden. And other people looking for opportunities to "replace" the high performer in various minor roles, perhaps with themselves naturally, due to mistaking results and effort with status and petty-political influence.
The most insidious and ironic of these I've seen weaponized burnout itself: "You seem like you may be heading for burnout. Why don't you step down for a while", said by someone who had been politically maneuvering to take over the role and whose public dramas were a significant driver, perhaps the only driver, of the burnout they purported to care about.
It is a rough social regulation cycle for the person committed to conscientious and effective work in an environment where people say they want one thing but act to produce another.