Buyer Trust:
Buyer has opened few projects but got zero ratings.
Conclusion:
Project is about writing 4 articles on the topic, LSI. The buyer has stated that, to only place bid if you know what LSI is.
So only those writers bid, who have the required knowledge.
The buyer has zero ratings and has opened few projects. At first instance, you may think that this buyer will not pay, but if you think about the amount of work involved, that is: only 4 articles are needed, then it means that the buyer will pay less than $20. For this project too, most probably, there will be no rating involved as the buyer is not buying the full payment.
So maybe this is a legit buyer, not sure about it.
NOTE: I am not saying anything bad about the buyers. I am not saying that any buyer is a scam. The reason why I may say that a project is unacceptable: is just my own thought based on my freelancing experience