Writing in clear understandable language and suggesting others do the same isn't "pseudo-intellectualism". It's just common sense. If you want your thoughts to be understood and respected, choose appropriate language to express them.
What people use in frequent communication with their friends or colleagues is likely to be different to that used on a public message board which brings together people from many different backgrounds for discussion of "deeply interesting" topics.
What people use in frequent communication with their friends or colleagues is likely to be different to that used on a public message board which brings together people from many different backgrounds for discussion of "deeply interesting" topics.