Whilst i agree that the construction and grammar of the e-petition is perhaps lacking in finesse (he/she obviously hasn't been on Staff Course..) isn't it a little petty to not sign it (whether it is now relevant or not) based purely on their use of the English language??
It's not as if it is particularly onerous to append your name to an e-petition and by signing it you're surely agreeing to the sentiment, not marking syntax!
Unfortunately, not all of us are skilful wordsmiths whose command of sentence construction has been honed through years of Staff writing and endless rounds of OJARs. Assuming an eligibility to vote, the poster should have a democratic right to explain 'in their own words' exactly how they feel and if others agree, be supported in that.
Of course, I may be wrong as i get annoyed as much as the next person from incorrect use of apostrophe's in the English language!!