Can you share links to these articles please?
Both are in a bubble. Ethereum is in a much bigger bubble.
What's your rationale for the bubble? Just saying so doesn't do much to make the rest of us understand or believe you.
There's a set of conditions on the charts that happen only during bubble times.
I outline and compare them to the most recent bubble from 2013
here for Bitcoin.
As for Ethereum, it is evident to the untrained eye. See posting above mine.