> coders are writing algorithms for say, 10-15 years I bet their code gets a lot more compact and sleek looking , almost akin to tight 3 character variable leet code solutions etc..

What are you talking about? I've been programming a long time, and clean, readable code with clear, descriptive variable names gives me a stiffy. It suggests a more meticulous mind than mine wrote it.

You know who writes the worst Gordian-knot code? Engineers from other disciplines who learned programming as a means to do other engineering calculation. Smart guys, but it's a pain keeping track of what i1, i2, i3, and i4 mean, or their 1970s FORTRAN program flow.