Topic on User talk:Rose
Hi. It was not me that undid the edits but I had supported the decision on the wiki Discord.
The statements looked like a forum post - the style was very informal ("mess up", "apparently", etc) and they addressed the reader directly, which is against the guidelines. Moreover, there was a lot of uncertainty from the use of expressions like "more testing is needed", "seems" and "appears". Coupled with the complete lack of references and explanations for what a memory leak is or how one can benefit from the knowledge, it definitely had no place on the wiki in that form.
Shadowstealer7 improved on it by describing the issue as high memory usage, which is easier to understand and harder to contest, especially when backed with references.
As for HDR, there is nothing in the guidelines that suggests it should be compared to that of consoles before setting it either way. It is simply defined as "Support for expanded color space", which was further supported by my screenshots within the reference comment following your questioning of it.