Very few. And I've the humility to beg forgiveness from even you when I do.
Still, I've no idea what message you were attempting to convey was in the passage I so "ruthlessly" critiqued. Perhaps that is the line that should be drawn in the metaphorical sand when it comes to criticizing the grammatical errors of others: when there is no ability to understand. If English isn't your first or even second language, please accept my apologies in advance. Your diction is commendable for someone who has adopted English as a tertiary language skill.
Also, if you weren't as critical of others, you might find that others might not be so quick to criticize you.
Heat, kitchens, and all.