An easy example of why it's needed:
"Webnovel will continue providing you guys with excellent contents!! and also trying our best to give our novels a bigger stage."
Some issues with this quote:
- Contents instead of content.
- No capitalized 'a' after the exclamation mark.
- Starting a sentence with 'and' while it's a conjunction.
- No subject in the second sentence and no auxiliary verb either.
Source: https://acts.webnovel.com/2018/63753361/index.html
This happens all the time and reduces the professionality of this company, thus I suggest Webnovel hires an editor or someone who is more proficient in English to write announcements, officialities, ...