[Citation needed]?
Science is very very difficult, a journal will try to only publish things it thinks are true however papers (especially in the more informal channels some journals have/less prestigious journals) which are merely interesting or could-be-right are published all the time. That mostly isn't a bad thing - something has to be published properly to be considered properly and fleshed out, dead ends are still ends.
Just take a look at this search query for “academia” on HN:
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...
I strongly disagree. It has always been as difficult as today (if not more), it's just that these days were aware of it.
What do you mean? Academics routinely do disclose their funding. In practically every paper published they list where their fund comes from.
If someone publishes papers without disclosing sources, that's a newsworthy exception in my opinion. Not proof that it's routine.