Take a look at all charts from 24 hours (or even less) to 2 years (or all time). Almost exponential growth lately, 200k unconfirmed transactions and the scaling issue not solved as of today. The WannaCry attack was attention for BTC, but put it in a bad light again. Now, what do you think? Are we in a bubble?
It's going up too fast. Exponential charts are by definition indications of bubbles. That said, bubbles can get very big before they burst and this one has a ways to go.