Personally I am skeptical regarding all.
Its
gambling, its direct access to others money so the idea the industry would be clean seems nonsensical to me. However (to repeat myself yet again) many have no choice but to play on line and it is up to every individual to accept it or not.
I think the programming/algorithms are weighted in various ways to generate an increased rate of play. As long as I feel that I am not personally being targeted (which many contend and I think at times with reason) then I am generally okay with it all.
As long as the love is spread around then fine. So for example, the last few days, even though my game varies little from one sessions to another, I have run good after a period of run bad.
It has jack to do with my play, rather than I am sat in the lucky seat, I get playable hands and they hold up. If we all receive our fair share them I can overlook the idea that hands can very often look very contrived.