The parent uses weasel words https://en.wikipedia.org/wiki/Weasel_word that, while technically correct, imply something false. The comment is refuting the implication.

Here the implication is that there is a fundamental design flaw in the OS that may cause widespread issues, when really this is a bug in quite a narrow edge case: it may happen when building colossal projects repeatedly on very high spec computers, the article suggests that the team at Microsoft investigating the bug couldn't reproduce it since they couldn't build Chrome as quickly as the author could.