Do you just believe everything everybody says? No quantifiable data required, as long as someone somewhere says it it must be true?
One of the reasons software is in decline is because it's all vibes, nobody has much interest in conducting research to find anything out. It doesn't have to be some double blinded peer reviewed meta analysis, the bar can still be low, it just should be higher than "I feel like"...
You don't seem to have answered my questions - you are just reiterating your own point (which I already responded to). Again I ask you - do you have studies to prove that syntax highlighting is useful or are you just using it because of vibes? Do you have research showing that writing in your language of choice is faster than Assembly?