Anecdotally: suspension and steering components wear a lot more than drivetrain components under northeastern US driving conditions. And electric cars will have springs, struts, dampers, sway bar links, tie rods, ball joints, and all the rest of the parts that are routinely exposed to dirt, salt, and water and subjected to all manner of forces from random angles.

By contrast, under normal operating conditions, most of the wear parts of the engine and driveline are running in a sealed environment, bathed in the appropriate lubricant, and, in the case of the engine, actively cooled to maintain optional running conditions.

Al the parts that make up an ICE are incredibly mature technology. The engineering work to get the tolerances and everything else worked out that has been done over the last hundred years is unreal. And it's happened in concert with work by chemists in the lubrication industry, and every other ancillary industry. The level of reliability under normal use with regular maintenance defies belief. Like, when was the last time you gave your spark plugs even a moment's thought? The progress in metallurgy, fueling and ignition systems has made them an all but lifetime part on modern cars.

I would actually wager that for most people, the least reliable and most aggravating part of their car is now the infotainment system.