You shouldn’t have to host your photos online to post them. Welcome to 2000.
This.
Also, online pics do disappear, and hosting sites too (remember Photobucket?), leaving blank frames in the posts where the pics used to be.
Not a big deal if it showed your cats lounging on top of your class A monoblocks pumping a Wagner symphony into your 1 ohm speakers.
On the other hand, the vanishing of hosted pics has rendered useless literally thousands of carefully documented fix / repair threads, and that's a loss for the community.
No one should use linked hosted pics imo.