With that same config (only 4K resolution allowed) and all addons beside Sootio disabled, I do still get a 4K result. I think that Sootio was previously not showing up due to the deduplicator aspect of AIOStreams. I believe that Meteor provided the quickest response, and that’s why it was the first to show (duplicate results by Sootio, Torrentio, and others were filtered out). If I disable all addons other than Sootio, and search again, AIOStreams still returns that 4K result but via Sootio. From what I can see, it’s doing what it’s supposed to.
There’s certainly no problem with adding all the scrapers independently. I just think that for a lot of people, having a single AIOStreams configuration provides 99% of what you need and also cleans up your addons screen quite a bit. For my Stremio, STRMR, and Nuvio builds, I only need two addons: AIOMetadata & AIOStreams, and I always get quality results that can play my intended media. Due to this, I’ve removed all my “duplicate” scraper addons. Good to have options though. This is just my personal experience. 