It is what most are saying about this bull run, this is caused by natural growth. After all of that news about adoption, PayPal, and other known institutions. This is making growth as natural as it is.
Bitcoin bull run is from itself and Ethereum does not contribute to bitcoin bull run.
In 2017 it did. The ICO bubble which originated from Ethereum actually contributed and I guess this time it still does. Due to the 2.0 and the Dapps/Defis.