No, that's not necessary but of course it's up to you if you want to post it in the imgur community or not. There's nothing to lose . The important thing is you copied the html link of the uploaded photo and you're good to go.

Just another tip in case you will be accessing the website through your mobile device, if you are having a problem on visiting then try to set your browser into 'desktop mode' first. That's what I always do every time the site recommend me to use their mobile app lol.