If these sorts of comments are coming from regulars, then they will probably read this meta question, so that's good enough.
Considering that, if you (the one reading this answer) know you are a person who gets easily annoyed by poor English, just skip over questions/answers you find that are written with poor English. Granted, this is harder to do if it's an answer to your question, or a comment on your answer, but it's always better to disengage before you end up crossing the line.
Content posted on the site in poor English eventually needs to be clarified (edited/rewritten) to be more readable, or deleted if it's bad for other reasons too. However, there's no obligation for you to invest that time and energy to do that editing, especially if doing so would irritate you. Instead, just move on and let someone else deal with it. There are enough of us on the site that skipping over content that irritates you is not committing a mortal sin.
Here are a few more practical tips:
- If there are comments with poor English, flag one of them (no need to flag them all on the same question) and a moderator will clean them up as needed, deleting any unclear or unhelpful comments.
- If you can spare the time/energy, and the content is a question or answer, edit it to improve the clarity based on what you can glean from what was written. Ask for clarification if needed.
- If you're lazy, just vote to close the question as "Unclear what you're asking" or flag it for a mod. Either of these actions should at least put others' eyes on it eventually, who in turn will either put in the work to clarify the question, or contribute to getting it closed so we can move on.
- In all cases, avoid discussion about the original author's quality of writing, etc. Users will get defensive and that's never a good thing. If you can't understand what they wrote, just leave a comment stating that you don't understand (and point out specifically what you don't understand) and see if they come back to clarify. If they don't, well, the content will eventually be closed/deleted after all.