Sorry to pop in on Inside Universal's board, but I saw the site was being linked to on here and wanted to answer this question myself.
I'm John Gregory, owner and operator of Orlando Rising. I started reporting on Orlando tourism and theme parks for the site in April 2018, when it was a general local news and politics site. It's now totally focused on Orlando theme parks.
As to whether we're trustworthy, I certainly aim to be. I've worked in journalism professionally for more than 8 years, and my goal is to do more responsible and credibly sourced reporting than some other fan sites (that's in no way directed at Inside Universal, Brian and co. do things right), and not focus on promoting the parks or covering every new limited-time snack or piece of merch.
In the case of this Muppets story, we got a Disney spokesperson on the record explaining the mural removal wasn't a site of MuppetVision's imminent demise, and three additional comments from theme park and Muppets experts, including Disney World's former casting director at the time MuppetVision opened.
Hope that answers your question! And apologies to Brian for coming on this board to talk about my site.