This root will void warranty.
Quote form the post you mentioned:
"Flash counters and KNOX warranty
Using this root method sets current binary and system status to custom. Additionally, it will also trigger the KNOX warranty void status.
This device store the traditional flash counter. Nor is is possible with Triangle Away to reset the current binary status. You will need to flash a stock kernel and stock recovery to reset the binary status.
The KNOX warranty status change is permanent, and a service center may deny warranty based on this flag - even if the other flags are reset correctly. The KNOX flag being tripped may also prevent certain Samsung KNOX features from working (enterprise security features). If this is something you care about, use a root method not based on custom kernels or recoveries, like a modified system partition. These are possible, but I don't personally make them, so look around!"[COLOR="Silver"]
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