RSO is generally heated, so decarbed. (RSO is generally a crude DIY cannabis extract).
Crumble is just a name for the consistency of the product, and is a marketing term rather than a scientific term.
Crumble can be made with decarbed or non-decarbed extracts.
These will generally be a distillate (so: Crude extract ->Dewaxed oil → distillation to remove ethanol and many other compounds to produce a cleaner product with higher cannabinoid content).
You mention CBGa crumble - this is generally ethanol extracted from non-decarbed CBG flower. It’s been distilled to remove the ethanol and contains little chlorophyll or waxes, so not “truly” full spectrum but more full spectrum than a less refined product like home made RSO (Which would not be commercially acceptable or useful for manufacturing.
In the case of CBGA crumble this is the natural form of the distillate following normal crystallisation of the CBGa in the presence of lots of other terpenes, cannabinoids and waxes etc. It’s a great product.
Note : your post has drawn some unhelpful/comedic comments because RSO is a crude cannabis extract, but this terminology and method is mostly used by a community who are using home/DIY/ghetto type methods, materials and consumables, and much of what is described as RSO online would not be considered to offer an optimal patient experience in terms of safety and flavour. People are calling many different methods/products RSO so it’s pretty meaningless beyond being a crude cannabis extract. It comes from decades ago before modern extraction science and nomenclature was widely used in the cannabis/hemp industry. You’ll see a lot of medical claims that are dubious at best, but a nice clean RSO is a great product.
BTW - if you want truly full spectrum cannabis, just juice leaves and flowers - if all that chlorophyll etc is really good for you then skip the extraction and go for juice which going to contain all the (potentially therapeutic) plant compounds. Definitely avoid any RSO method using hydrocarbons unless you have the technology (distillation or vacuum oven) to completely remove them. Ethanol is GRAS (Generally regarded as safe for human consumption) so DIY RSO made with this method is usually best.
Lets consider a clean, safe, RSO type extract made with ethanol.
This is a highly full spectrum product including lots of cholorophyll, pigments, waxes and other plant compounds which may or may not be beneficial. These make the product dark and thick, and generally unappetitising and difficult to use or formulate other products with.
A cleaner approach is using cold ethanol to minimise the amount of non-cannabinoid/terpene type compounds.
This “bucket tech” is the DIY version of what commercial extractors do with machines like the CUP30
The result is an amber resin with minimal chlorophyll or plant pigments, but still plant waxes etc. This is crude ethanol extract (basically commercial quality RSO) that has had the ethanol and lighter compounds removed by distillation - so already not full spectrum compared to a raw extract - “Full spectrum” is a relative term
Waxes and other lipids are usually removed by precipitation in cold conditions (winterisation). The result is usually called winterised ethanol extract.
This can be further distilled to remove more impurities are removed by distillation the product is called distillate - less “full spectrum” again, but more full spectrum that an isolate…
If you don’t decarb the flower first, you’ll be extracting mostly acid cannabinoids like THCa, CBDa etc and also preserving a lot more terpenes etc… If you do decarb it you’ll be extracting THC, CBD etc
It’s a nice, fairly full spectrum extract but not nearly as full spectrum as a crude extract.
With non-decarbed CBGa extracts this is going to look like crumble.
I hope this helps a bit - there are many ways to do each step and a lot of the nomenclature is dependent on specific technologies (with RSO mostly an older DIY name for crude extract).
Is RSO better than a high quality refined extract or distillate? Most of the time I’d say no but there many pigments and waxes etc that may be medicinal compounds that are removed during extraction and refinement. That’s why I suggest going for juicing if you want a raw, natural, truly full spec product.
But for manufacturing tinctures or gummies or similar a refined extract, distillate or isolate has many advantages.