For large projects using complex compiled languages like Rust, C++, and ostensibly according to this post, Crystal, yes, they are bad.
I have worked on several projects where a full clean compile of the project takes 30+ minutes, and even incremental compiles and links to a large module will take 60-90s at absolute minimum because linker times are still shitty - and this is even with modern, powerful hardware, think 32 or 64 hyperthread Ryzen CPUs, not just your typical dev laptop.
It may not seem like much, but 60-90s is definitely enough to get you distracted and out of the zone.
Having to wait longer to see the results of one's work results in loss of focus and productivity.