I always find it fun, which isn't nice of me, when Google representatives call out webmaster publicly for doing things against the webmaster guidelines. I find it especially funny when the webmaster is seeking help from Google, which is why Google looked and noticed the issue.
Gary Illyes from Google responded to a webmaster on Twitter saying "give it some time. also, please get rid of the keyword stuffing." The give it some time had to do with the Google Sitemap indexing bug, which I am told is being fixed now or should be fixed soon for most webmasters.
The second part was Gary took a look at the web site of this webmaster and advised the webmaster to "get rid of the keyword stuffing."
Will this lead to a penalty? Probably not, unless it had one already. But I suspect the algorithms don't like it too much anyway.
We have seen this happen every now and then, when a webmaster would give Google a hard time and then Google check into things. Google then outs them in public after enough complaining.
Here is this tweet:
@rajatgarg79 give it some time. also, please get rid of the keyword stuffing @rustybrick
— Gary Illyes (@methode) July 20, 2015
Forum discussion at Twitter.