If people are referring to a bubble like the 2013 bubble, then no. Bitcoin isn't gonna drop down to like $1000 and stay there for a year or two. Adoption is increasing too rapidly and the upwards momentum is too great. As we have seen in recent weeks the "bubble" popped in late May and then you could say again today. But these aren't bubbles. They are just corrections which last a few days or maybe a week or two and then bitcoin breaks new ground. The price increase obviously is going to slowdown at some point soon, possibly there will just be corrections more frequently so growth will be slower, but a bubble this is not.
In addition,there are more countries are adopting now and even recognized it legally. I call it correction as of now and it will bounced back in the coming days. I think its normal in trading there are always ups and downs.