everything you mentioned it is not worth for a Muslim. but you can grow in a way that is more appropriate, such as the signature campaign and trading.
precisely, signature campaign and trading is very beneficial for bitcoiner Muslim. they can earn lawful money of the two.
You are right trading is best ways to take bitcoin in halal ways and it is don't have relations with gambling or betting. But you can not sure that all of signature campaign is good for muslim.
There is some signature campaign, sorry i mean majority of signature campaign is the campaign from gambling and betting site. Did you think from where they pay their campaigner ? I know that not every muslim give attention about that ! *cmiiw