Jawaid bhai has given you name of lughat in his reply so copying/pasting his reply will not change anything.
Would you believe salat = ritual prayer because people accepted these meanings for centuries or are you going to follow the Quranic use of the term salat?
People have been writing for centuries that Jesus is son of god. Would you accept their claim correct because people spent their lives writing this non-sense?
There is a large number of christian who believe in it. Hindu believe in their mythology. Can you accept their claim because people have been writing it for centuries?
You wrote: "This is indeed a news to me as well as those who gone before us for last 1400 years. Those who spent their lives writing about such roots and collecting their meanings were not really well-versed in their craft. It was left for us, the non-Arabs to clarify root meanings for them. Is that the claim?"
I am not clarifying root meanings but I am trying to follow the root meanings as per Quranic use of the term salat. The Quran claims that it is a guidance for people as per 2:185
شَہۡرُ رَمَضَانَ ٱلَّذِىٓ أُنزِلَ فِيهِ ٱلۡقُرۡءَانُ هُدً۬ى لِّلنَّاسِ وَبَيِّنَـٰتٍ۬ مِّنَ ٱلۡهُدَىٰ وَٱلۡفُرۡقَانِۚ
Do you think that non-Arabs like us cannot get guidance from the Quran without the help of Arab scholars. Do you think Allah SWT sent this guidance without any built in mechanism that could clarify the meanings to non-Arabs?
You wrote: “I am happy for you my brother. You can believe the way you want, you can live your life the way you want, who am I to object to it. My only effort is to educate myself foremost and then others those who want to stay close to the Quran, not generalizing and trivializing it, rather understand it the way it is. I am only highlighting logical as well as linguistic flaws in some of my brothers’ interpretations. Internet or no internet, this quote will always stand the test of time: when your imagination is out of focus, you cannot depend on your eyes (my interpretation and not exact word for word quote).
Brother read what you have written above. I believe I am doing the same. May Allah guide us to real understanding of His Book.