Just to put context to why I made my comment on you and J. Just as you started commenting, J stopped. This may just be a coincidence of course but it also followed the fact that J had been issued a warning by the moderators as he resorted to attacking them, and sadly my experience is when this has happened in the past, sock puppetry ensues. Sorry if that has offended you.
Because of the nature of the internet it is wise to choose sources of information and quotes and links. If you link something then I need to check that it comes from a trustworthy source. I know my personal checks and bias is how I determine trustworthiness, and it is a matter of personal experience ands preferences. I cannot check every link that is posted and then answer your queries in detail, that really is not the purpose of such a forum.
In the case of BitChute, it is somewhat naïve in my view to think that they are arbiters of free speech and to believe this just on the basis that they take censored material from elsewhere. Bitchute also censor their contents and if you want to also see why it is a bad site, read their Trustpilot reviews. But there are other ways of judging: examine the contents for yourself and please link to me something from BitChute to disprove what I said. In the case of those posted by J, I could quickly determine that they are not trustworthy, again my personal judgement based on my personal knowledge and experience. By the way this is not me claiming any superiority of knowledge, just me filtering what information is useful to me and what is not.
This question of reliability of any website is also not a fixed parameter. I can give you many examples of websites I used to visit frequently because of their reporting on some issues, that then were completely of views alien to me in others. I will not give specific examples.
Not every opinion is equal and worthy of debate or consideration. There has to be some base of fact and methodology in order to analyse and inform oneself as to how the information can be useful. You quoted the Guardian in one of your links. Nothing wrong with that, the Guardian does some excellent reporting in some areas but very poor and biased in others. If I want to live in a self confirming echochamber, I could be very proscriptive in what I read, but I read even some conspiracy sites in order to keep tabs of what the current arguments are.