Programmers rarely change codebase names when corporate names change - it has a huge cost for almost no benefit. That's why so many of Apple's Objective-C class names start with NS - which is for NextStep, the company Apple acquired in the mid 90s.
I would say I find a patter of meaningless name changes much more prevalent in "enterprise software" circles.
Find and replace wouldn't be that bad with 'Square' I feel like, I don't think you use the word 'Square' too often while programming, if the company was named ';' or 'def' then id just find another job.
You use square all the time if doing linear algebra or geometry. ;)