From what I saw on CH4 news a few weeks ago the issue is a lot of people have lived in rented accommodation in those areas for years. Some of them for generations. So what you have now is many poor elderly people who were getting by, now having to move out of the place they called home for 65 years. That hurts.
One long established community is being pushed out to make way for another that could just change or disappear at the whim of some Tech CEO or public taste and trends.