I think it's fine to share positive feedback with your child. Just as long as you are avoiding, as a default, steering their behaviour via your (or other's) feelings in a manipulative way. There are parallels in adult communication where I think it can be easier to see that that's a weird / unhelpful way of communicating.
Imagine a workplace supervisor was orienting you to a new situation or environment, and they spoke to you like this:
"It gets me so down when people do not follow procedure X"... "Oh look you've missed Step A that I've shown you, god I'm stressed out now, you've got to do better than that, you're really making me want to give up" or "I am so happy, someone (you) has finally followed Step A, I will be singing in the car on the way home now!"
And imagining that wasn't light hearted or some kind of joke but genuinely the way your supervisor routinely conducted feedback on a day to day basis. I think as adults, people in the workplace would really have their backs up and frankly, think someone who supervised/taught in this way was a bit unhinged. Or if they didn't externalise it as the supervisor's problem, it really might be quite stressful and confusing dealing with that kind of up and down emotional feedback. They might even be distracted by the essential content of the feedback itself by the delivery style.
It doesn't matter that the supervisor is the expert, responsible for teaching everyone about Procedure X, or that the feedback is correct, when it's delivered in that way it's not as helpful.
Kids don't know better, do they are likely to internalise whatever kind of feedback style you use.
Compare to a supervisor who speaks like this:
"Okay this part is the really important bit, because not following Procedure X means that consequence Y, which really is a lot of extra work for me"... "Ah, you've gone wrong there by not following Step A, this is how you do Step A for next time" or "Great job with getting through Step A that time, you nailed it" - this demonstrates that it is possible to give positive and negative feedback, without the confusing emotional baggage. There will be some occasions where it's totally appropriate to say "I'm really proud of you" of course, but for the little things, "Good job" (or equivalent) I think does a better job of actually allowing a child (or adult!) to feel proud of their own conduct.