While you can then put the full image inline with the post, it is not advised.
Opening the page with images on it is not a major problem, so long as there aren't bucketloads and they are small in size - such as thumbnails are. Some members here have slow connections, so it is really frustrating for them to just "check out" a thread if they have to wait forever while huge images load. Using the thumbnails means they can get an idea of what the image is - and if they are interested, then can then
choose to have the full image downloaded by clicking on the thumbnail.
One last point - Very often, images do not have to have megabytes for them to be detailed enough to show what is important - so if you can reduce file sizes before uploading, it will be appreciated by many. The other thing is that large file sizes are pointless when the image is not of high quality in the first place - and this one of yours is not the best (but it is better than some we have seen).
Here I have reduced it to
1/
20 th of the original file size - and it is small enough that I am comfortable putting it inline...

Even then ... for what it is showing, it could still be made smaller.