@miketerndrup wrote:
It was on Twitter a couple of months ago
--------------------------------------------------------
Sigh...
Social media has absolutely NO authority, NO editorial oversight, and NO academic or scientific rigor. It's full of opinionated people, some of whom have some idea what they are talking about, many either with their own agenda, or spouting mis-information that they have got through the same sources themselves. If you want authoritative information get it from reliable sources such as articles that are clearly researched or from professionals.
I started working in photography over 40 years ago, and I still practice for pleasure. Over the years I have shot everything from portraits, through city architecture, macros, and landscape, to birds in thick bush or apex predators, from the Australian outback via Asia to North America.
I have, and continue to teach photography both in the technical and artistic aspects. My oldest working film camera is from 1978, and my oldest DSLR is from 2000 and I still use it. It takes amazing images.
From there I have a decent sampling of gear up to the EOS R6. I got that equipment, not because I thought it would make me a better photographer, but because I had a technical interest in the equipment. Some of my images are posted on this site if you want to look at them, and I have written articles reviewing gear, also published here and elsewhere. So I think I can express an opinion with some authority.
When you buy a camera it has certain capabilities, and as long as the camera is not damaged or worn out it will continue to have those capabilities. People also focus on the camera, but often ignore the optics: which, frankly, often have a greater impact on your images. However, the thing that makes the biggest impact is your skill in knowing your gear and being able to set up and capture an image that is both technically correct and artistically engaging. That comes from practice, practice, practice and study.
Study of your camera manuals and how to use the controls so they are like second nature to you and so you don't have to search for them, distracting you from that critical moment when your shot comes along. Study the work of good photographers, especially in the areas that you want to shoot in. Study ART - painters and sculpters knew a lot about positioning subjects within a landscape of field of view. I am still taking courses in art and art history to learn from the greats.
So let me say that the 80D is no less capable than it was when it came out. It is still a great camera and will continue to be so. There is a lot of hype about mirrorless, much of it from those who care more about the gear than the craft. If you learn to be a good photographer you can pick up ANY camera and take good images with it. For an example of this see: https://www.youtube.com/watch?v=70vx4bgKzms DO check out Sean's Youtube videos and website - he is an excellent photographer, but more importantly he is wise.
Also, you have given us absolutely no information about the context in which you will use the camera. The suitablility of ANY tool depends on its application. Check out my article in this site: Advice for those seeking new gear Then, if you want more advice, come back with the answers to those questions and we can give you some good advice that is tailored for your needs about where to go in future. In the meantime, you have a perfectly functional camera - go out and use it!
All of these images were taken on the Canon EOS 80D. All hand-held, using available light.
Hopefully there is something amongst these to give you confidence that your camera is a capable tool.
My apologies I do Sports photography and I am doing bird photography with a mix of different types, Here are some of my photos. The reason I am scared my 80D is getting a spot on it and I am scared Canon won't fix it 
