Considering that adding a screenshot to a post is still a challenge to quite a few users, what about suggesting this website as an additional option:?
https://gifyu.com/You can drag images to the main page, and then perform only two steps to get a working link that you can copy into a post:
It looks clean and simple to me, but that could well be related to some privacy/adblocking addons I am using.
Maybe it's an ugly commercial mess without that? Or maybe there are other objections to that specific site?
Opinions?