Have you heard of the whisper game? Let's say there are 10 people sitting in a row and the first person says something to the other, by the time the 10th person states what the first one has said, the real meaning changes. The ancient maharishis have stated everything in sanskrit and everything is with respect to the entire chart NOT just one particular thing like 1st lord in 5th house and the kid will die. Well, my father has his 1st lord Jupiter in his 5th house Aries and Mars in the 1st house. And, I am still alive, hopefully I will still do by god's grace
Also, what you read on the internet on those free webpages needn't necessarily be the truth unless it has been stated that say statement 15/4 Brihat Jataka or BPHS. Add to it, how do you know that he has copied the correct statement and that 15/4 actually means that? Unless the source is very very authentic.
On a psychological note, it might be a wary for the reader for impending danger (which is necessarily good) or it might be to scare you so that you ask the services of the said person for the benefit of you.
It's all a matter of perspective. no?