The rest are just ideological and/or about facilitating illegal activity and irrelevant to most people. This is the problem with Bitcoin and other digital currencies. There is just not enough focus on making something better and simpler than the existing system.
You mean mainstream disadvantage.
I think most people using VISA are happy that they won't lose all their assets to fraud or theft of their credit card. Mainstream retailers accept a certain amount of fraud as a cost of doing business, only disruptive or greymarket vendors face significant risk from chargebacks.
Removing chargebacks is a positive benefit to a tiny fraction of the participants in legitimate financial services.