I don't think hard drive space / cost will be an issue for Bitcoin adoption long-term.

Advancements in storage tech is so obvious if you actually research the industry.

I still like the idea of some people working on a competing client to core.

This is the crux of where I agree with the idea of trying to limit spam meanwhile, disagreeing with the premise that spam could actually kill Bitcoin due to chainsize.

In essence, I appreciate Mechanic & Luke, & I support their work but, I do not feed into the hysteria portion of their argument.