In the last 12-18 months there's been a massive change in the demographics of the area. A big influx of largely young, professional and reasonably affluent people have moved into the area. Which means that people who have lived here for a long time are being priced out of the market. Same for some longstanding local businesses. Of course places evolve over time, but when change happens to communities so quickly it causes some resentment and massive changes to the area. Doesn't always necessarily mean it's a bad thing per se, but it does have repercussions for housing, business, schools and other infrastructure.
Communities can become transient. Many (not all) of the people moving to the area will move out to buy a place, start a family or just because they want a quieter life. Some of those are reasons for people moving in too from more affluent areas. Nothing necessarily wrong with any of those choices, but when you have a massive influx of this sort of thing over a short period of time it inevitably unsettles areas for good and/or bad reasons.