I am not sure if it will help out the luxury part of the question because spending a lot of bitcoin on stuff that are super expensive could still take some time to get common, it probably already has happened few times but I doubt it has happened too many times so far.

It means the regular stuff (like going to a cafe and paying there with bitcoin) will be simpler to adopt for now, I know it is not fast enough and quick enough just yet but overtime it will get to an instant level in the future with technology getting faster as well, I even think that lightning network will make sure of that in 2020 so adoption at the cheap stuff will get more famous. However stuff like luxury cars will still take a long way before it happens (except maybe tesla because elon is a weird dude).