He's easy to listen to. His information is still valuable, even though the equipment is old. I've been a subscriber for probably two years at this point. It's not necessarily easy, but it's feasible to make these old machines run again. This is especially true with diesel engines. Even old diesel fuel works just fine, once you get the rest sorted out.
There are a couple of American channels with similar content (Diesel Creek and Scrappy Industries, for starters).
But Bruce is easy to listen to. While I'm sure he has done so, I can't picture him yelling in anger. He has one of those soothing voices, with clear articulation and consistent cadence. It also helps that he knows a lot about the subject.
I haven't ever had the time to dig into his older videos. They were shorter and in a different format. He just sort of suddenly started doing longer videos with big equipment at about the time I stumbled into his channel. I'm not really all that interested in his earlier stuff, as it is just short videos without much content that interests me.
My second favorite Australian YouTuber is not some channel for the masses.
I'll link to the start of a playlist, but I'll warn folks that it's 'addictive'. At the same time, I'll warn folks to not miss much. If you're not paying attention, even for a few minutes, you'll resume watching and be completely lost. You'll have no idea how he went from Point A to Point B.
His skills are amazing. He's currently recreating the Antikythera Mechanism, but doing so only using the technology we know they had available at the time. He doesn't use any powered equipment. If he needs a tool, he makes the tool. That series is not yet complete.
Again, be careful. This dude is highly addictive. A part of that is because you can't miss anything. The dude's skills are on par with any other master of the arts. But it requires paying attention to really enjoy it (or so I found).