There are always contradicting solutions, as each case is in a different situation, different timing, different illness, different remedies, different everything.
For example, big cage is fine for tamed birds, they will come out when called. But not good with untamed birds, since they get caged bound easily. (Bird's mind may be saying, "big cage has every comfort, why risk going out?") So it's best to start the untamed in smaller cage with favorite toys, which later get moved outside the cage, to encourage the bird to come out to play with her favorites.
Contradicting solutions here is whether a vet visit, is one of the following.......
1) an immediate necessity, or
2) an unnecessary, or
3) Unnecessary with potentially harm.
Taking a closer look at each option.....
1) is it an immediate necessity?
It is true that birds hide their illness to predators but there are things that is easily detectable to us human. I mean, if she play less, eat less, poops changed, maybe it is an immediate necessity to call a vet. But in her case, she plays more and even start to speak. (Let us not forget that she just got out from a store's vet and other scary events.) In fact, if her nose swell, nose and eye discharge, less playful, less eating etc. should accompany it. But I can't see any thing wrong in the photo. She looks fine to me. Nope, no medical emergency I can think of from seeing this photo.
2) is it an unnecessary visit?
Speaking from my experience, my Emerald get stressed when she had to see a vet. The strangers, strange procedures and weird equipment on top of an unfamiliar place. ( She remember people and equipment from her previous encounter as well.) Coming home, she was shaken, refusing the person (my spouse) who walk her in to see the vet. This surprise me

For 3 long months, she was speechless, did not answer when called as usual, and always flew away to keep a safe distance from my spouse. (Before the vet, they were besties, always talking, shoulder riding, preening hair, performing tricks. Eventhough, all the vet did was just some tests. Ouchhhh....)

Speaking from a bird's mind, "hey that is scaryyy, hands off, don't hurt me!"
After lots of trial and errors, my best ever avian vet, is a conservative one. He would advise against any treatment, test, or invasive procedures which is unnecessary. He also advise close observation and gave us his private number. To find an ideal vet in your area, you might have to see a vet many times or see many different vets through years. But that is worth the wait. Since it is a matter of life and death in some emergency case. An emergency that requires handling her against her will emergency. (Or sometimes, under anesthetics.)
But all in good times, hope this will come after she is already perching on your shoulder, preening you.
I am weary of vets that suggest invasive treatments especially when they do not have time to explain a lot. Or stores that suggest wing clipping just because everyone does it.
3) Unnecessary with potentially more harm than good?
Wing clipping for my Emerald, to me fall in this category. After all, if cut too deep, she could be crippled. In young birds, it stop proper muscle development. It is sad that it is still a common practice.
On the other hand, I also read that birds fly into windows because they can not see that glass is there blocking their flight path. With glass,

can't tells whether it is open or close. To prevent such accident, without wing clipping, our family help Emerald by telling her where the glass windows are. I put her on my left hand, and bring her face close to the glass while I tap on the surface with my right่hand. She remembered and never flew into a glass window, opened (by accident) or closed. We, only had to show her to each and every closed glass windows in the room, by tapping. We didn't put any color sticker. I was surprised she remembered so well. Emerald had never had her wing clipped, had never had any accident from flying. She is very confident with her acrobatic flights. Eg. Zig zag, infinitive 8, and straight hop from the ground up to my hand in straight line.