First. I don't know how someone can unironically post a picture with a screenshot of an article headline and call it evidence for anything.
Second, photos of starved polarbears are generally misleading, as the bear seen in the photo, probably starves because of old age and worn teeth.
Third, polarbears populations are going up in some places. This is due to them being heavily hunted before. Now, some populations have hunting banned, others have certain restrictions to hunting. Anyway, many population are just regaining the former strength.
With this said, polar bears will suffer in the coming years due to less and less sea ice. Which they need in order to hunt seals. They can't survive on bird eggs and carcasses alone.
Looking into whole "too many polarbears in Canada" thought:
"Researchers agree that polar bears represent a growing threat to Inuit communities, but say that is because climate change has pushed them closer to human settlements – not because the bear population is growing."