It is untrue.

In third-world nations, plagiarism is not a serious matter even in university, college, research articles or business companies.
In forum globally, Bitcoin talk forum is a most serious forum about plagiarism but unfortunately plagiarism cases nowadays tend to be handled considerably softer than the past especially in 2018 or 2019.

It was introduced circa 2016 and second chance started to be initiated since 2018.

explanation in 2018 and became more often applied in 2019. In that year, theymos started to give global moderators' right to handle plagiarism cases and award second chance for deserved members.