You suggest the author to read a topic that you obviously haven't read yourself. It doesn't talk about Mega Evolutions in that topic. Mega pokemon have their own rulings, they are not legendary and WILL be implemented, confirmed by almost all staff, but it will take a long time.
Second, you judge the author's english when you yourself don't know how to speak properly English (Its makes me laugh).
Next time, don't try to be a smart***, you just embarass yourself.
About the topic, as mentioned above though, it's been suggested and discussed countless times. Mega evolutions will come but it will take a long time to do so.