Not really. A single and album are aimed at different part of the musical audience. They have a totally different chart for them. Different media. Different meanings in the musical world.
If the database is to be replace with a pedantic reading of “it is part of an album so merge it into same RG” then we might as well scrap all categories. Throw the remixes in too. And all EPs.
Common sense has to come in to play. Singles are different to albums.
Personally I always find the “do I own X” argument bizarre. Or do people who buy a deluxe album throw away their original album? I have samplers because they are unique items. They are on the shelf next to my original UK album, my US edition with extra tracks, and my deluxe 25th anniversary editions. They are all variations of the original album.
If you are going to break all the samplers out into new RGs, then you need to break all Deluxe editions out too. They are just promotions really. Promoting an old album.
A promotional edition of an album may be five tracks, or it may be all of the tracks same as the main Release. The current guidelines are sensible in keeping these together as the represent the same album.
Also note, we have relationships to show that a Single is from an Album. It follows the logic the record industry follows.