If it affects rubbers hoses and gaskets, shouldn’t it be cause for concern?
Alcohol softens neoprene and rubber causing it to fail. Old fuel pumps will fail and replacement ones do not do much better.
I don’t know about where you’re at, but up here, the place is crawling with 200,000 mile cars and trucks. They fall apart from rust way before the engines or fuel systems go.
The biggest engine problems are with COP coils, a real stupid idea. That and variable timing components. Not to mention front hub assemblies on 4WDs, ABS and TPMS.
The biggest repair section, by far, is brakes.