Mainframes have their uses, and I haven't heard of anyone pushing them outside of financial applications, where mainframes don't offer much value. As for being

Mainframes have their uses, and I haven't heard of anyone pushing them outside of financial applications, where mainframes don't offer much value. As for being eventually phased out, so will everything else, even x86 and ARM. You don't have to like Dave, his "garage", his channel, or his previous employers, but lots of people find his videos interesting.