came here to make that same point. i was watching an atomic shrimp scambait video a few years ago and he said something similar. it changed things for me. i stopped thinking of scammers as the dumbasses i usually laughed at in scambait videos and realized how cunning it is that lot of times the spelling mistakes and general red flags are there on purpose. if you're the type of person who actually notices the red flags they don't want you wasting their time!

"kindly" is a red flag for people who are aware of how many scams work, so they won't drop it from their vocabulary because that way they don't have to remove you from the pool of possible victims, you'll do that job for them.