peace truthsearcher, all,
Firstly, please bear in mind verse 3:7. This seems to be an under appreciated verse. It's message is very powerful. Please ponder upon it.
Secondly, please do not compare like with unlike. For example, you list quite a number of different views, but be careful you do not confuse the wheat with the chaff. If you ask yourself: how many of those views actually have a detailed article behind them? You will suddenly find the number of variant views reducing dramatically.
Now, once the list of variance is reduced, ponder upon what the differences would be in a practical manner. Usually, the variance, whilst still there, is again reduced.
I am glad you mentioned 3:7 I too feel that this is the basis of our understanding the Qur'an, and how we should evaluate interpretations of other; especially those who mainly seek discord and massage the text to produce an interpretation that suits their purpose.
However in your second point you remind me of some who claim that only Muslim scholars should be trusted with the interpretation of the Qur’an and who reject the views of all others. If you want to rely on 3;7 then there is no need to hold those as more reliable who write long articles. Also not everyone likes to write article as an authority, as there is always the risk of unintentionally misleading others.
The Qur’an warns us about those who with their eloquence impress many yet they are hypocrites and their aim is to cause discord. Take as an example the discussion of Ramadan on this forum where many, who profess knowledge, have been misleading others by their twisted take on Ramadan.
Easy to understand ayats elucidates the implication of the lunar month and only those who witness, it clarifies the meaning of days to be counted within this month for fasting. It also specifies when to eat and drink and when to stop and when having sex is allowed yet those in whose heart is a disease would follow that of it which is unspecific.
In addition there are those in this forum who want everyone to stop mentioning Muhammad and instead take them as the authority. Perhaps this kind of heedless speculation is what caused Bukhari and Muslim to dig out hadiths to stop people from blowing their own trumpets.