I have no idea why they don't meet Wikipedia's "notability" criteria or why such a 10 or 20 years old tool has or hasn't its own page - and I don't care. The list left (other than InstallShield and WiX) is a joke and you can plainly see that none of those editors has any expertise in the field. The end result is that that article is useless or worse for anyone reading it. Which I thought was the whole point of Wikipedia.
[1] https://docs.microsoft.com/en-us/windows/msix/desktop/deskto...
That you don't care about core Wikipedia values means that your attempts to edit it will always be frustrating for you. I get that they can be mysterious to outsiders, but unfortunately they're necessary. In particular Wikipedia isn't a place for people with expertise to come write things. It's a place where people with no particular expertise use expert material elsewhere to create an encyclopedia. That means every item must be traceable to reliable sources (which they call verifiable) and articles must have enough sourced material that you can write a basic article from it (which is what they call notable).
If you are an expert on this, then I'd suggest you write a signed article in some publication with a reasonable editorial apparatus, or in some other way that qualifies as a Wikipedia reliable source: https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources
Then you can mention the article on the talk page and a Wikipedia editor can look at incorporating the material. Or if you think a reliable source already exists, try mentioning that. But no, you can't just put in things you think are true on Wikipedia if you don't have sources. Because however much it might help for this specific case, allowing that generally would quickly make Wikipedia a garbage heap.
[1] https://en.wikipedia.org/wiki/List_of_installation_software#...
Just an example, in my area of expertise. Some of the rejected edits were mine.