IDK about that.... I found IFTs destroyed my critical thinking skills, while at least in 911s, there was some need to use my brain. The running joke was an trained monkey could run a 911 calls... when doing IFT, you could use an untrained monkey. Maybe not all IFTs are the same, but I'll take a 911 truck over a non-emergency truck any day.
CCT, particularly unstable CCT is a much different environment.
And for the record, being a a paramedic, on a system where you need to run every call, including all the BLS ones, is a surefire way to cause your critical thinking skills to diminish. Any skills that don't get used often will atrophy.