I disagree. This is great for bulk tasks: renaming, finding and searching for things, etc

What codex often does for this, write a small python script and execute that to bulk rename for example.

I agree that there is use for fast "simpler" models, there are many tasks where the regular codex-5.3 is not necessary but I think it's rarely worth the extra friction of switching from regular 5.3 to 5.3-spark.